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公开(公告)号：US11499025B2
公开(公告)日：2022-11-15
申请号：US17266680
申请日：2019-08-20
发明人： So Nishino , Yoshikazu Kono , Takashi Ochi , Junichi Aoki , Yoshiyuki Kitamura , Kiyoshi Minoura
摘要： The present invention provides an apparatus for producing a prepreg, for applying a coating liquid to a reinforcing fiber sheet, the apparatus including: a coating section including: a liquid pool storing the coating liquid and having a portion whose cross-sectional area decreases continuously and vertically downward, and a narrowed section having a slit-like outlet in communication with the lower end of the liquid pool; a running mechanism for allowing the reinforcing fiber sheet to run vertically downward and be introduced into the coating section; a take-up mechanism for taking up the reinforcing fiber sheet downward from the coating section; wall constituent members opposed to each other in the thickness direction of the reinforcing fiber sheet to form the narrowed section; and an external force application mechanism for applying an external force to the wall constituent members in the thickness direction of the reinforcing fiber sheet.
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公开(公告)号：US11491685B2
公开(公告)日：2022-11-08
申请号：US17266413
申请日：2019-08-20
发明人： Takashi Ochi , Yoshikazu Kono , So Nishino , Junichi Aoki , Kiyoshi Minoura , Tamotsu Suzuki
IPC分类号： B29B11/16 , B29K63/00 , B29K307/04
摘要： A method is described for producing a prepreg formed by applying a matrix resin to a reinforcing fiber sheet, wherein the method can effect continuous running without clogging due to generated fuzz even at a high running speed and effect efficient impregnation of the reinforcing fiber sheet with a matrix resin. A method of producing a prepreg includes allowing a reinforcing fiber sheet to pass substantially vertically downward through the inside of a coating section storing a matrix resin to obtain a matrix resin-impregnated reinforcing fiber sheet in which the matrix resin is applied to the reinforcing fiber sheet and at least heating the matrix resin-impregnated reinforcing fiber sheet, wherein the coating section includes a liquid pool and a narrowed section which are in communication with each other, wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber sheet.
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3.发明申请公开(公告)号：US20200276733A1
公开(公告)日：2020-09-03
申请号：US16494824
申请日：2018-02-22
发明人： Junichi Aoki , Takashi Ochi , So Nishino , Satoshi Enzaki , Takaaki Yamashita
IPC分类号： B29B11/16
摘要： The present invention provides a technology in production of a prepreg and enhances the production efficiency, in which the technology allows the arrangement property and rectilinearity of reinforcing fibers to be well maintained and allows any resin to be applied stably at a high speed. A prepreg is produced by a method which includes: discharging a molten resin in planar form to form a resin film, and applying the resin film onto a reinforcing fiber sheet conveyed continuously, wherein the reinforcing fiber sheet is conveyed substantially in the horizontal direction, and wherein an angle made between the discharge direction of the resin and the conveyance direction of the reinforcing fiber sheet 1a is 80° or less.
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公开(公告)号：US20180244880A1
公开(公告)日：2018-08-30
申请号：US15756815
申请日：2016-08-31
发明人： Junichi Aoki , Koji Furukawa , Kyoko Tamaru , Atsuhito Arai , Hiroaki Sakata , Takashi Ochi
摘要： Provided are: an epoxy resin composition that gives a carbon fiber-reinforced composite material having excellent moldability, heat resistance, and mechanical properties such as tensile strength and compressive strength; and a prepreg. An epoxy resin composition containing at least the following constituent elements [A]-[D]. The epoxy resin composition contains 5-50 parts by mass of constituent element [A] and 20-95 parts by mass of constituent element [B], as well as 1-25 parts by mass of constituent element [C], relative to 100 parts by mass of the total amount of epoxy resin. Constituent element [A] is an epoxy resin having primarily two epoxy groups and one or more condensed polycyclic aromatic hydrocarbon skeletons within a repeating unit of a specific structure; [B] is a glycidylamine epoxy resin having three or more glycidyl groups in the molecule; [C] is a sulfone or imide thermoplastic resin; and [D] is an epoxy resin curing agent.
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5.发明授权公开(公告)号：US11806899B2
公开(公告)日：2023-11-07
申请号：US16494824
申请日：2018-02-22
发明人： Junichi Aoki , Takashi Ochi , So Nishino , Satoshi Enzaki , Takaaki Yamashita
IPC分类号： B29B11/16
CPC分类号： B29B11/16
摘要： The present invention provides a technology in production of a prepreg and enhances the production efficiency, in which the technology allows the arrangement property and rectilinearity of reinforcing fibers to be well maintained and allows any resin to be applied stably at a high speed. A prepreg is produced by a method which includes: discharging a molten resin in planar form to form a resin film, and applying the resin film onto a reinforcing fiber sheet conveyed continuously, wherein the reinforcing fiber sheet is conveyed substantially in the horizontal direction, and wherein an angle made between the discharge direction of the resin and the conveyance direction of the reinforcing fiber sheet 1a is 80° or less.
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公开(公告)号：US20220112344A1
公开(公告)日：2022-04-14
申请号：US17266680
申请日：2019-08-20
发明人： So Nishino , Yoshikazu Kono , Takashi Ochi , Junichi Aoki , Yoshiyuki Kitamura , Kiyoshi Minoura
摘要： The present invention provides an apparatus for producing a prepreg, for applying a coating liquid to a reinforcing fiber sheet, the apparatus including: a coating section including: a liquid pool storing the coating liquid and having a portion whose cross-sectional area decreases continuously and vertically downward, and a narrowed section having a slit-like outlet in communication with the lower end of the liquid pool; a running mechanism for allowing the reinforcing fiber sheet to run vertically downward and be introduced into the coating section; a take-up mechanism for taking up the reinforcing fiber sheet downward from the coating section; wall constituent members opposed to each other in the thickness direction of the reinforcing fiber sheet to form the narrowed section; and an external force application mechanism for applying an external force to the wall constituent members in the thickness direction of the reinforcing fiber sheet.
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公开(公告)号：US20210291405A1
公开(公告)日：2021-09-23
申请号：US17266413
申请日：2019-08-20
发明人： Takashi Ochi , Yoshikazu Kono , So Nishino , Junichi Aoki , Kiyoshi Minoura , Tamotsu Suzuki
IPC分类号： B29B11/16
摘要： A method is described for producing a prepreg formed by applying a matrix resin to a reinforcing fiber sheet, wherein the method can effect continuous running without clogging due to generated fuzz even at a high running speed and effect efficient impregnation of the reinforcing fiber sheet with a matrix resin. A method of producing a prepreg includes allowing a reinforcing fiber sheet to pass substantially vertically downward through the inside of a coating section storing a matrix resin to obtain a matrix resin-impregnated reinforcing fiber sheet in which the matrix resin is applied to the reinforcing fiber sheet and at least heating the matrix resin-impregnated reinforcing fiber sheet, wherein the coating section includes a liquid pool and a narrowed section which are in communication with each other, wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber sheet.
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公开(公告)号：US11034810B2
公开(公告)日：2021-06-15
申请号：US16491050
申请日：2018-03-05
发明人： Junichi Aoki , Koji Furukawa , Atsuhito Arai , Jun Misumi , Hiroaki Sakata , Takashi Ochi
摘要： An object of the present invention is to provide an epoxy resin composition capable of providing a carbon fiber-reinforced composite material that is excellent in moldability, heat resistance, and mechanical properties such as tensile strength and compression strength, and a prepreg. The present invention provides an epoxy resin composition containing at least components [A] to [D] shown below: [A]: an epoxy resin having a xylene group; [B]: a glycidyl amine epoxy resin having three or more glycidyl groups in a molecule; [C]: a thermoplastic resin; and [D]: an aromatic polyamine, the epoxy resin composition containing 10 to 80 parts by mass of the component [A] and 20 to 90 parts by mass of the component [B] based on 100 parts by mass in total of epoxy resins, and also 1 to 25 parts by mass of the component [C] based on 100 parts by mass in total of epoxy resins.
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9.发明申请公开(公告)号：US20200277461A1
公开(公告)日：2020-09-03
申请号：US16494825
申请日：2018-02-22
发明人： Takashi Ochi , Junichi Aoki , Takaaki Yamashita
摘要： The invention enhances the production efficiency in the production of prepreg by allowing the arrangement property and rectilinearity of reinforcing fibers to be well maintained, allowing the basis weight uniformity of an applied resin to be good, and further allowing a high line speed and suppression of contamination in the process to be achieved. The invention provides a method of producing a prepreg, which includes: discharging a molten resin from a discharge portion; introducing the discharged resin by an air flow; and capturing the discharged resin on a reinforcing fiber sheet conveyed continuously, wherein a key point is that the discharged resin is captured in a region in which the reinforcing fiber sheet is conveyed substantially in planar form.
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公开(公告)号：US11192280B2
公开(公告)日：2021-12-07
申请号：US15733988
申请日：2019-05-23
发明人： Takashi Ochi , So Nishino , Tamotsu Suzuki , Junichi Aoki
摘要： The present invention is a method of producing a coating liquid-impregnated reinforcing fiber fabric 1b, including allowing a reinforcing fiber fabric 1a to pass substantially vertically downward through the inside of a coating section 20 storing a coating liquid 2 to provide the reinforcing fiber fabric 1a with the coating liquid 2; wherein the coating section 20 includes a liquid pool and a narrowed section which are in communication with each other; wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber fabric 1a, wherein the narrowed section has a slit-like cross-section and has a smaller cross-sectional area than the top side of the liquid pool, and wherein the vertical height of the portion whose cross-sectional area decreases continuously in the liquid pool is 10 mm or more.
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