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公开(公告)号：EP4129602A1
公开(公告)日：2023-02-08
申请号：EP21776330.9
申请日：2021-03-16
IPC分类号： B29B11/16 , B29C70/18 , C08J5/04 , D02J1/18 , B29K105/12
摘要： Provided is a useful improvement in a method for manufacturing a CF-SMC from a continuous carbon fiber bundle having a large filament number, typically such as a large tow. A manufacturing method of an SMC of the present invention comprises (i) forming chopped carbon fiber bundles by chopping a continuous carbon fiber bundle having a filament number of NK with a rotary cutter, (ii) fragmentation-processing the chopped carbon fiber bundles by using a fragmentation-processing apparatus comprising a rotating body, (iii) forming a carbon fiber mat by depositing the fragmention-processed chopped carbon fiber bundles on a carrier film traveling below the rotary cutter, and (iv) impregnating the carbon fiber mat with a thermosetting resin composition, wherein N is 20 or more, and the fragmentation-processing apparatus comprises a first pin roller and a second pin roller which are disposed side by side, each having a rotation axis parallel to a rotation axis direction of the rotary cutter.
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公开(公告)号：EP3778166A1
公开(公告)日：2021-02-17
申请号：EP19781850.3
申请日：2019-03-29
IPC分类号： B29B11/16 , B29K105/14
摘要： What is provided is a method for stably producing a fiber-reinforced resin molding material by splitting a fiber bundle such that a split portion becomes long while a non-split portion is shortened. A method for producing a fiber-reinforced resin molding material in which a cut fiber bundle is impregnated with a resin, the method comprising a splitting step of splitting the fiber bundle with a splitting machine at intervals in a longitudinal direction and a cutting step of cutting the fiber bundle at intervals in the longitudinal direction after the splitting step, in which the splitting machine comprises a rotary blade having a releasing section and a spacer member adjacent to the rotary blade.
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3.发明公开
公开(公告)号：EP4375037A1
公开(公告)日：2024-05-29
申请号：EP22845683.6
申请日：2022-05-20
IPC分类号： B29B11/16 , D04H1/4242 , D04H1/736 , B29C70/18 , B29C70/50
CPC分类号： D04H1/736 , D04H1/4242 , B29C70/18 , B29C70/50 , B29B15/122
摘要： The purpose of the present invention is to achieve at least one of the following: preventing contamination of SMC manufacturing line, maintaining the cleanliness of mechanical elements included in SMC manufacturing apparatus, preventing failure of control equipment installed in or around SMC manufacturing apparatus, and preventing deterioration of working environment. The method of manufacturing a sheet molding compound, comprises (i) allowing short fiber bundles to fall onto a travelling carrier film, while dispersing the short fiber bundles using a dispersion roller device, thereby depositing a fiber mat on the carrier film, and (ii) impregnating the fiber mat with a thermosetting resin composition, wherein the dispersion roller device has a rotationally driven dispersion roll, bearings, a first side cover, and a second side cover, wherein the dispersion roll comprises a roll body and roll body-adjoining parts, and an inner circumferential surface of a circular opening provided in each of the first and second side covers and a cylindrical circumferential surface of each of the roll body-adjoining parts face each other.
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公开(公告)号：EP3919425A1
公开(公告)日：2021-12-08
申请号：EP20748420.5
申请日：2020-01-21
发明人： KANEHAGI Junji , MIZUTORI Yukihiro
摘要： An object of the present invention is to provide a fiber package in which a partially split carbon fiber bundle is wound around a bobbin, and which has no problem in unwindability. A fiber package is provided, which is a square-end type fiber package formed by traverse winding a fiber bundle (12) around a bobbin, in which the fiber bundle (12) is partially split into sub-bundles (11), and the width W of the fiber bundle (12) is smaller than the total sum of the widths Ws of the sub-bundles (12). A fiber package is also provided, which is a square end type fiber package formed by traverse winding a fiber bundle (12) around a bobbin, in which the fiber bundle (12) is partially split into sub-bundles (11) and is wound around the bobbin so as to cause the sub-bundles (11) to overlap each other.
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5.发明公开
公开(公告)号：EP4163426A1
公开(公告)日：2023-04-12
申请号：EP21821463.3
申请日：2021-06-01
IPC分类号： D02J1/18 , B29B11/16 , D06H7/04 , D06M15/59 , B29K105/14 , D06M101/40
摘要： Provided is an improvement in a method for manufacturing a slit carbon fiber bundle. The method for manufacturing a slit carbon fiber bundle of the present invention is a method including a step of forming a resin film on one surface of a flat carbon fiber bundle to obtain a single-sided coated carbon fiber bundle, and a step of partially slitting the single-sided coated carbon fiber bundle using a slitter roll to obtain a slit carbon fiber bundle, which has been split into sub-bundles, wherein in the step of slitting, the single-sided coated carbon fiber bundle contacts a circumferential surface of the slitter roll on a surface where the resin film has been formed.
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公开(公告)号：EP3395551A1
公开(公告)日：2018-10-31
申请号：EP16878799.2
申请日：2016-12-21
CPC分类号： B29B15/122 , B29C70/06 , B29C70/12 , B29C70/504 , B29K2063/00 , B29K2307/04 , C08J5/04 , C08J5/042 , C08J2363/00
摘要： Provided is a fiber-reinforced resin material molding in which fluctuations of the dispersion state of the fiber bundle in the molding is small, the generation of a resin pool is suppressed, and fluctuations in physical properties such as tensile strength and modulus of elasticity are suppressed; a method for manufacturing the same; and a method for manufacturing a fiber-reinforced resin material. Provided is a fiber-reinforced resin material molding comprising: a fiber bundle prepared by bundling a plurality of reinforcing fibers; and a matrix resin, wherein a coefficient of variation in fiber content of the reinforcing fibers per unit zone of 0.1 mm square on a cut face along a thickness direction is 40% or less.
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公开(公告)号：EP4371722A1
公开(公告)日：2024-05-22
申请号：EP22842084.0
申请日：2022-07-11
IPC分类号： B29B11/16 , B29K105/12
CPC分类号： B29K2105/1220130101 , B29B15/122
摘要： Objects of the present invention include providing a manufacturing technology for CF-SMC capable of suppressing lint originating from the fiber dust from incorporation into a product despite using a dispersing roll. A method of manufacturing a sheet molding compound (SMC) according to an aspect of the present invention comprises: (i) drawing out a carrier film from a roll to travel on a conveyance path such that the surface of the carrier film is horizontal; (ii) cutting a continuous carbon fiber bundle into short carbon fiber bundles with a chopper disposed above the conveyance path; (iii) allowing the short carbon fiber bundles to fall onto the carrier film traveling on the conveyance path while dispersing them using a dispersing roll disposed below the chopper to deposit a carbon fiber mat on the carrier film; (iv) impregnating the carbon fiber mat with a thermosetting resin composition to obtain a resin-impregnated carbon fiber mat; and v) concurrently with the deposition of the carbon fiber mat, removing fiber dust generated from the short carbon fiber bundles due to contact with the dispersing roll using a dust collector.
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8.发明公开
公开(公告)号：EP3444090A1
公开(公告)日：2019-02-20
申请号：EP17782321.8
申请日：2017-04-07
IPC分类号： B29B15/08 , B29B11/16 , D02J1/18 , B29K101/10
摘要： The present invention provides a method for manufacturing a fiber reinforced resin material, the method including an opening step of opening an elongated fiber bundle to be widened in a width direction thereof to be put into a flat state; and a heat setting step of heat-setting the opened fiber bundle in the flat state by heating. In addition, the present invention provides an apparatus for manufacturing a fiber reinforced resin material containing a plurality of fiber bundles and a resin, the apparatus including an opening section that opens an elongated fiber bundle to be widened in a width direction thereof to be put into a flat state; and a heat setting section that heat-sets the opened fiber bundle in the flat state by heating.
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