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1. 发明申请

US20230078709A1 LIQUID CRYSTAL POLYMER FILM AND LAMINATE 有权
公开(公告)号：US20230078709A1
公开(公告)日：2023-03-16
申请号：US17867632
申请日：2022-07-18
申请人： FUJIFILM Corporation
发明人： Akira YAMADA , Koji NITTA
IPC分类号： B32B15/08 , C08J5/18 , C08J5/12 , B32B7/12 , B32B15/20 , B32B27/32
摘要： An object of the present invention is to provide a liquid crystal polymer film having an excellent peel strength of a laminate produced by sticking a metal foil to the liquid crystal polymer film; and a laminate.
A liquid crystal polymer film including a liquid crystal polymer, in which in a case where a cross-section of the liquid crystal polymer film along a thickness direction of the liquid crystal polymer film is exposed and immersed in monomethylamine, and then void regions are extracted from an observed image of a cross-section obtained by using an electron microscope, an average value of widths of the void regions is 0.01 to 0.1 μm and an area ratio of the void regions in the observed image of the cross-section is 20% or less.

3. 发明申请

US20230060658A1 POLYMER FILM AND LAMINATE 有权
公开(公告)号：US20230060658A1
公开(公告)日：2023-03-02
申请号：US17868780
申请日：2022-07-20
申请人： FUJIFILM Corporation
发明人： Akira YAMADA , Kei SHIMOTANI
IPC分类号： B32B27/36 , B32B15/09 , B32B15/20 , C08J5/18
摘要： An object of the present invention is to provide a polymer film, in which in a case where a laminate is manufactured by sticking a metal foil to the polymer film, the adhesiveness between the polymer film and the metal foil is excellent, and the performance of suppressing a misregistration of a wiring line formed on the metal foil is excellent even in a case of further laminating a sticking material on the wiring line; and a laminate.
A polymer film including a liquid crystal polymer, in which in a case where an elastic modulus at a position A at a distance of half of a thickness of the polymer film from one surface toward the other surface of the polymer film is defined as an elastic modulus A and an elastic modulus at a position B at a distance of ⅛ of the thickness of the polymer film from one surface toward the other surface of the polymer film is defined as an elastic modulus B in a cross-section along a thickness direction of the polymer film, a ratio B/A of the elastic modulus B to the elastic modulus A is 0.99 or less and the elastic modulus A is 4.0 GPa or more.

4. 发明申请

US20230022144A1 POLYMER FILM AND SUBSTRATE FOR COMMUNICATION 有权
公开(公告)号：US20230022144A1
公开(公告)日：2023-01-26
申请号：US17948198
申请日：2022-09-19
申请人： FUJIFILM Corporation
发明人： Takeaki SAWAYA , Akira YAMADA
IPC分类号： C08J5/18 , C09K19/38
摘要： An object of the present invention is to provide a polymer film having a small anisotropy of linear expansion factor. Another object of the present invention is to provide a substrate for communication including the polymer film.
The polymer film of the present invention is a polymer film including a liquid crystal polymer, in which, in a case of observing a surface of the polymer film under a crossed nicol environment with a polarization microscope, a plurality of bright portions are observed in an observation region, and in the plurality of bright portions, an equivalent circle diameter of a bright portion having a maximum equivalent circle diameter is 10 μm or less.

5. 发明申请

US20220204851A1 LIQUID CRYSTAL POLYMER FILM AND SUBSTRATE FOR HIGH-SPEED COMMUNICATION 有权
公开(公告)号：US20220204851A1
公开(公告)日：2022-06-30
申请号：US17696888
申请日：2022-03-17
申请人： FUJIFILM Corporation
发明人： Takeaki SAWAYA , Takeo KIDO , Akira YAMADA
IPC分类号： C09K19/38
摘要： The present invention provides a liquid crystal polymer film having good smoothness and surface properties and having reduced anisotropy. In addition, the present invention provides a substrate for high-speed communication relating to the liquid crystal polymer film. The liquid crystal polymer film of the present invention includes a liquid crystal polymer component and at least one component selected from the group consisting of an olefin component, a cross-linking component, and a compatible component.

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