Patents Assigned to KOTOBUKIYA FRONTE CO., LTD.
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Patent number: 11959525Abstract: There is provided a vibration damping material capable of exhibiting excellent vibration damping performance and of reducing its own weight while having high rigidity. The vibration damping material of the present invention used so as to be installed on a panel of a vehicle includes a viscoelastic layer and a constraining layer provided on one surface of the viscoelastic layer, wherein a relationship between a strain ?a and a strain ?b is 0<?a/?b<1, the strain ?a being a strain on a surface of the constraining layer on the opposite side to the viscoelastic layer, and the strain ?b being a strain on a surface of the constraining layer on a side in contact with the viscoelastic layer.Type: GrantFiled: January 24, 2019Date of Patent: April 16, 2024Assignee: KOTOBUKIYA FRONTE CO., LTD.Inventor: Kazuki Fukui
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Patent number: 11945379Abstract: A sound-absorbing material for vehicles that is mounted to a vehicle interior and that is provided with a main body in which at least a fibrous material and a skin material are integrally molded. The sound-absorbing material for vehicles is characterized in that a sound-absorbing section provided to at least part of the main body is formed so as to be mounted to the vehicle interior within a range in which the vertical distance Elh from the lower surface of the head rests of the front seats downward is 0.1-0.4 m, and in that the air flow resistance AFR (Ns/m3) and the vertical distance Elh (m) satisfy 210<AFR+10/Elh<3020.Type: GrantFiled: May 9, 2019Date of Patent: April 2, 2024Assignee: KOTOBUKIYA FRONTE CO., LTD.Inventors: Tomoyuki Hagio, Morio Suzuki, Yoshiaki Suzuki, Satoshi Shimada
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Patent number: 11872945Abstract: There is provided a sound-absorbing material for a vehicle, capable of stably yielding desired sound absorption performance while reducing weight of the sound-absorbing material for a vehicle. The sound-absorbing material for a vehicle of the present invention has a multilayer structure, including: a core layer in which tubular cells are arranged in a plurality of rows; and an airflow-blocking resin film layer adhered to one surface of the core layer. The relationship between the Young's modulus E (MPa) of the airflow-blocking resin film layer 40 and the surface density M (g/m2) of the layer structure on the first airflow-blocking resin film layer 40 side with respect to the core layer 10 is 0.5<E/M<21.Type: GrantFiled: September 14, 2018Date of Patent: January 16, 2024Assignee: KOTOBUKIYA FRONTE CO., LTD.Inventor: Kazuki Fukui
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Publication number: 20230373409Abstract: There is provided an automobile component capable of improving sound absorption performance by damping due to vibration of a thin film as well as reducing weight of the automobile component. An automobile component of the present invention includes a core layer 10 in which tubular cells 20 are arranged in a plurality of rows, and a nonwoven fabric layer 30 on one or both surfaces of the core layer. The cells have closed surfaces 21 and open ends 22 in every other row as cell ends on one surface of the core layer. As cell ends on the other surface of the core layer, the cells have open ends 22 in the rows where the cells have the closed surfaces as cell ends on the one surface, and have closed surfaces 21 in the rows where the cells have the open ends as cell ends on the one surface. The open ends 22 allow the internal space of the cells 20 to be in communication with the outside. A thin resin film layer 40 having a plurality of apertures is provided between the core layer and the nonwoven fabric layer.Type: ApplicationFiled: August 3, 2023Publication date: November 23, 2023Applicant: KOTOBUKIYA FRONTE CO., LTD.Inventors: Tetsuya Masumura, Yuki Miyata
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Patent number: 11794670Abstract: There is provided an automobile component capable of improving sound absorption performance by damping due to vibration of a thin film as well as reducing weight of the automobile component. An automobile component of the present invention includes a core layer 10 in which tubular cells 20 are arranged in a plurality of rows, and a nonwoven fabric layer 30 on one or both surfaces of the core layer. The cells have closed surfaces 21 and open ends 22 in every other row as cell ends on one surface of the core layer. As cell ends on the other surface of the core layer, the cells have open ends 22 in the rows where the cells have the closed surfaces as cell ends on the one surface, and have closed surfaces 21 in the rows where the cells have the open ends as cell ends on the one surface. The open ends 22 allow the internal space of the cells 20 to be in communication with the outside. A thin resin film layer 40 having a plurality of apertures is provided between the core layer and the nonwoven fabric layer.Type: GrantFiled: March 29, 2018Date of Patent: October 24, 2023Assignee: KOTOBUKIYA FRONTE CO., LTD.Inventors: Tetsuya Masumura, Yuki Miyata
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Publication number: 20230311459Abstract: This vehicular interior finishing material has a layered structure including n layers (where n is a natural number equal to or greater than 2), and at least includes a substrate that is a first layer and a skin layer that is an nth layer. The vehicular interior finishing material is configured such that formula (1) is satisfied, where dn (mm) is the thickness of each of the n layers, En (GPa) is the Young's modulus, and ? (g/cm3) is the density of the entire vehicular interior finishing material. In addition, this seat back panel is formed using the vehicular interior finishing material.Type: ApplicationFiled: December 13, 2021Publication date: October 5, 2023Applicant: KOTOBUKIYA FRONTE CO., LTD.Inventor: Kazuki FUKUI
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Publication number: 20230249596Abstract: The example of the vehicular interior trim according to the present application is multilayer structure including at least a base material and a skin layer. The multilayer structure is configured to satisfy the relationships in the following expressions (1) and (2), where RSm (mm) is the average surface roughness of the base material in the horizontal direction, E1_80is the Young’s modulus of the base material at 80° C., d1 (mm) is the thickness of the base material, E2_80 (GPa) is the Young’s modulus of the skin layer at 80° C., and d2 (mm) is the thickness of the skin layer. Expression (1): Expression (2): 0.Type: ApplicationFiled: December 13, 2021Publication date: August 10, 2023Applicant: KOTOBUKIYA FRONTE CO., LTD.Inventor: Kazuki FUKUI