JP2009066813A - Molding method of fiber reinforced plastic and manufacturing apparatus thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve productivity provide by increasing the flow rate of a resin to be supplied in the molding of a fiber reinforced plastic by a molding method such as a VaRTM (Vacuum assisted Resin Transfer Molding) method and a RTM (Resin Transfer Molding) method. <P>SOLUTION: In the molding method of tghe fiber reinforced plastic, by which a core material 2is arranged on a molding mold 1 and is covered air-tightly with a sealing sheet 5, the inside of the sealing sheet is vacuumed, and then the resin is poured into the sealing sheet to impregnate the core material with the resin, a plurality of layers of impregnation media 4a, 4b are interposed between the core material and the sealing sheet, a gap 10 is formed in the sealing sheet, the resin is supplied from one side of the inside of the sealing sheet and the resin is discharged from the other side to form a unidirectional resin flow. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fiber reinforced plastic molding method for molding a fiber reinforced plastic by a vacuum pressure resin impregnation molding method or a resin impregnation molding method, and an apparatus for manufacturing the same.

  As a method for producing a large-sized fiber-reinforced plastic molded article with a simple mold, it is possible to produce a large-sized fiber-reinforced plastic molded article by using a vacuum pressure resin impregnated molding method (VaRTM) or a resin impregnation molding method (RTM). Resin Transfer Molding).

  First, the vacuum pressure resin impregnation molding method (VaRTM) will be described with reference to FIG.

  In FIG. 4, reference numeral 1 denotes a mold, and the illustrated mold 1 shows a case where a flat fiber-reinforced plastic molded product is manufactured.

  A core material 2 is installed on the mold 1. The core material 2 is a fiber base material formed by laminating carbon fibers, glass fibers, and the like, for example. The core material 2 is covered with a release sheet 3 which is a fine cloth material, and further, the core material 2 is covered with the release sheet 3 with an impregnating medium 4 which is a mesh cloth.

  Further, a sealing sheet 5 covering the outer periphery of the impregnating medium 4 is covered, and the periphery of the sealing sheet 5 is brought into close contact with the mold 1. The sealing sheet 5 is made of an airtight material such as polyethylene.

  A resin supply nozzle 6 is disposed in the inside of the sealing sheet 5 and in the vicinity of the end of the core material 2. An upstream liquid feed tube 7 communicates with the resin supply nozzle 6, and the upstream liquid feed tube 7 is connected to the resin feed nozzle 6. Is connected to a resin supply source 8.

  Inside the sealing sheet 5, a resin suction nozzle 9 is disposed at a position facing the resin supply nozzle 6 with the core material 2 interposed therebetween, and the resin suction nozzle 9 is connected via a downstream liquid feeding tube 11. A vacuum pump 12 is connected, and a trap 13 for collecting liquid is connected to the downstream liquid feeding tube 11.

  When molding fiber reinforced plastic, first, the inside of the sealing sheet 5 is sucked by the vacuum pump 12 to be in a vacuum state, and the gas inside the core material 2 is also sucked. Next, when liquid resin is supplied from the resin supply source 8 to the inside of the sealing sheet 5 through the upstream liquid feeding tube 7 and the resin supply nozzle 6, the resin is separated from the upper surface of the core material 2. The excess resin flows through the gap between the sealing sheets 5 and is sucked from the resin suction nozzle 9 and further collected by the trap 13. As the resin flows between the core material 2 and the release sheet 3, the resin soaks into the core material 2 and covers the surface of the core material 2.

  When the impregnation of the resin into the core material 2 is completed, the space 10 is sealed with a clip or the like, the upstream liquid feeding tube 7 and the downstream liquid feeding tube 11 are cut while maintaining a degree of vacuum, and cured at room temperature. Alternatively, it is cured by heating at a predetermined temperature in an oven. After the curing, the sealing sheet 5, the impregnation medium 4 and the release sheet 3 are peeled off, and a molded product (one obtained by impregnating the core material 2 with resin and curing) is taken out from the molding die 1.

  The impregnation time in the core material 2 when the molded product is manufactured is affected by the flow rate of the resin flowing in the sealing sheet 5, and the flow rate is the size of the cross section of the flow path, that is, the gap in the sealing sheet 5. Affects. The gap in the sealing sheet 5 is formed by the impregnating medium 4. However, in order to secure a flow rate, if the mesh size is enlarged, the mesh size is transferred to the surface of the molded product, and the unevenness is conspicuous on the surface of the molded product. It becomes like.

  For this reason, in products that require a smooth and beautiful surface finish, the mesh of the impregnated media 4 must be made smaller, and the manufacturing time becomes longer, which is a factor that hinders productivity improvement. It was one.

  In addition, there exists a thing shown by patent document 1 and patent document 2 about shaping | molding of the fiber reinforced plastic by VaRTM shaping | molding method and RTM shaping | molding method.

JP 2006-130733 A

JP 2006-240046 A

  In view of such circumstances, the present invention increases the flow rate of resin to be supplied in the molding of fiber reinforced plastics by molding methods such as the VaRTM molding method and the RTM molding method, thereby improving productivity and further smoothing the surface. The present invention provides a method for molding a fiber-reinforced plastic that does not impair the beauty.

  In the present invention, a core material is installed in a mold, the core material is airtightly covered with a sealing sheet, the inside of the sealing sheet is evacuated, and then a resin is poured into the sealing sheet to impregnate the core material. In a fiber reinforced plastic molding method, a plurality of layers of impregnated media are interposed between the core material and the sealing sheet, a gap is formed in the sealing sheet, and resin is supplied from one of the sealing sheets. However, the present invention relates to a method for molding a fiber reinforced plastic in which the resin is discharged from the other side so that a unidirectional resin flow is formed.

  Further, the present invention relates to a method for molding a fiber reinforced plastic in which the plurality of layers of the impregnating media have different mesh sizes between layers.

  The present invention also relates to a method for molding a fiber reinforced plastic in which the plurality of layers of the impregnating media have at least a mesh mesh of the impregnating media of the layer adjacent to the core material.

  The present invention also relates to a method for molding a fiber reinforced plastic in which, when the plurality of layers of impregnation media is three or more layers, at least the mesh media of the impregnation media of the layer adjacent to the core material and the impregnation media of the upper layer are reduced. Is.

  In the present invention, the resin is supplied over the entire width or substantially the entire width of the core material, the resin is sucked over the entire width or the substantially entire width of the core material, and a uniform flow is formed in the width direction inside the sealed sheet. The present invention relates to a method for molding a fiber reinforced plastic.

  The present invention also relates to a method for molding a fiber reinforced plastic that supplies a resin so that the flow in a direction different from the flow in the inside of the sealing sheet is at least in a resin supply section.

  The present invention also includes a mold on which the core material is installed, a release sheet that sequentially covers the core material, a plurality of layers of impregnated media, a resin supply nozzle disposed on one of the core materials, and a second side. The provided resin suction nozzle, the core material, the release sheet, the impregnation medium, the resin supply nozzle, a sealing sheet that covers the resin suction nozzle and is airtightly packed, and an exhaust device that evacuates the inside of the sealing sheet And a fiber reinforced plastic manufacturing apparatus comprising a resin supply source connected to the resin supply nozzle and a resin discharge unit connected to the resin suction nozzle.

  In the present invention, the impregnating medium of the plurality of layers relates to a fiber reinforced plastic manufacturing apparatus in which the mesh size is different between the layers.

  The present invention also relates to an apparatus for producing a fiber reinforced plastic in which the plurality of layers of impregnated media have at least a mesh mesh of the impregnated media of layers adjacent to the core material.

  The present invention also relates to an apparatus for producing a fiber reinforced plastic in which, when the plurality of layers of impregnation media are three or more layers, at least the mesh media of the impregnation media adjacent to the core material and the upper layer of the impregnation media are made small. Is.

  In the present invention, the resin supply nozzle and the resin suction nozzle have a tube shape having a length equivalent to or slightly shorter than the width of the core material, and the resin supply nozzle has a resin supply port at a required pitch. The resin suction nozzle is provided with a resin suction port at a required pitch.

  Furthermore, the present invention relates to a fiber reinforced plastic manufacturing apparatus in which at least a resin supply port provided in the resin supply nozzle is provided in a direction different from the flow of resin inside the sealing sheet.

  According to the present invention, a core material is installed in a mold, the core material is airtightly covered with a sealing sheet, the inside of the sealing sheet is evacuated, and then a resin is poured into the sealing sheet to form the core material. In the method of forming a fiber reinforced plastic to be impregnated, a plurality of layers of impregnation media are interposed between the core material and the sealing sheet, a gap is formed inside the sealing sheet, and a resin is formed from one of the sealing sheets. Since the resin is discharged from the other side and a resin flow is formed in one direction, the gap formed by the impregnation medium is increased, the resin flow rate for impregnation is increased, and the fiber reinforced plastic is increased. The time required for molding is reduced.

  Further, according to the present invention, since the mesh media of the plurality of layers have different mesh sizes between layers, interference between the mesh media between the impregnated media can be avoided, and the work when the impregnated media is made into multiple layers. Becomes easy.

  Further, according to the present invention, the impregnated media of the plurality of layers has reduced the mesh size of the impregnated media of at least the layer adjacent to the core material, so that the influence of the transfer of the mesh to the surface of the molded product is avoided, Finish on a smooth surface.

  Further, according to the present invention, when the plurality of layers of impregnating media are three or more layers, at least the impregnating media of the layer adjacent to the core material and the mesh of the upper layer of impregnating media are made small. The effect of the transfer of the mesh is avoided, and the surface finishes smoothly.

  According to the invention, the resin is supplied over the entire width or substantially the entire width of the core material, the resin is sucked over the entire width or the substantially entire width of the core material, and flows uniformly in the width direction inside the sealing sheet. Thus, the uniformity of the material is improved and the partial impregnation delay is eliminated, so that the overall molding speed is shortened.

  Further, according to the present invention, since the resin is supplied so that the flow is different from the flow inside the sealing sheet at least in the resin supply unit, the resin velocity distribution in the resin supply unit can be equalized. .

  Further, according to the present invention, a mold in which a core material is installed, a release sheet that sequentially covers the core material, a plurality of layers of impregnating media, a resin supply nozzle disposed on one of the core materials, and the other A resin suction nozzle, a core sheet, the release sheet, the impregnation medium, the resin supply nozzle, a sealing sheet that covers the resin suction nozzle and is hermetically packed, and evacuates the inside of the sealing sheet. Since the apparatus includes an exhaust device, a resin supply source connected to the resin supply nozzle, and a resin discharge unit connected to the resin suction nozzle, a gap formed by the impregnation medium is increased and impregnated. The resin flow rate is increased and the time required for molding the fiber reinforced plastic is shortened.

  Further, according to the present invention, since the mesh media of the plurality of layers have different mesh sizes between layers, interference between the mesh media between the impregnated media can be avoided, and the work when the impregnated media is made into multiple layers. Becomes easy.

  Further, according to the present invention, the impregnated media of the plurality of layers has reduced the mesh size of the impregnated media of at least the layer adjacent to the core material, so that the influence of the transfer of the mesh to the surface of the molded product is avoided, Finish on a smooth surface.

  Further, according to the present invention, when the plurality of layers of impregnating media are three or more layers, at least the impregnating media of the layer adjacent to the core material and the mesh of the upper layer of impregnating media are made small. The effect of the transfer of the mesh is avoided, and the surface finishes smoothly.

  According to the invention, the resin supply nozzle and the resin suction nozzle have a tube shape having a length equivalent to or slightly shorter than the width of the core material, and the resin supply nozzle has a resin at a required pitch. Since the supply port is provided and the resin suction nozzle is provided with a required pitch at the required pitch, a uniform flow is formed in the width direction inside the hermetic sheet, and the uniformity of the material is improved. The delay in the impregnation is eliminated and the overall molding speed is shortened.

  Furthermore, according to the present invention, since at least the resin supply port provided in the resin supply nozzle is provided in a direction different from the flow of the resin inside the sealing sheet, the resin velocity distribution in the resin supply portion is evenly distributed. Excellent effects such as can be achieved.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 and 2 show an outline of a fiber-reinforced plastic manufacturing apparatus in which the present invention is implemented.

  In FIGS. 1 and 2, the same components as those shown in FIG. 4 are denoted by the same reference numerals.

  An outline of the fiber reinforced plastic manufacturing apparatus 15 will be described.

  The fiber reinforced plastic manufacturing apparatus 15 includes a molding die 1 on which a core material 2 is installed, a release sheet 3 that covers the core material 2, and a plurality of layers of impregnated media 4 a and 4 b that are superposed on the release sheet 3. In the figure, two layers are shown), and a resin supply nozzle 6 and a resin suction nozzle 9 are provided at positions facing each other with the core material 2 interposed therebetween. Further, the impregnated media 4a and 4b, the resin supply nozzle 6, and the resin suction nozzle 9 are covered with a sealing sheet 5 whose periphery is sealed with the molding die 1, and an upstream liquid feed tube connected to the resin supply nozzle 6. 7, a resin supply source 8 connected to the upstream liquid feed tube 7, a downstream liquid feed tube 11 connected to the resin suction nozzle 9, a vacuum pump 12 connected to the downstream liquid feed tube 11, and the downstream liquid feed A trap 13 and a flow rate adjusting valve 18 provided in the tube 11 are provided. The upstream liquid feeding tube 7 and the downstream liquid feeding tube 11 penetrate between the hermetic sheet 5 and the molding die 1, and the penetration portion is hermetically sealed. Alternatively, the upstream liquid feeding tube 7 and the downstream liquid feeding tube 11 pass through the sealing sheet 5 and are hermetically sealed at the penetration portion.

  The mold 1 is a flat plate in the figure, but the shape is selected according to the shape of the target molded product. For example, when producing a molded product having a convex curved surface shape, the shape of the mold 1 has a convex curved surface upward, and the core material 2 is placed so as to closely follow the convex curved surface, Similarly, the release sheet 3, the impregnated media 4 a and 4 b, and the sealing sheet 5 are covered along the curved surface of the mold 1.

  Examples of the material of the release sheet 3 include those that have no affinity with the resin to be molded and can be easily peeled off, for example, fluorine-based resins such as polytetrafluoroethylene, and the material of the impregnating media 4a and 4b. Examples include polyethylene and polypropylene.

  A plurality of layers of the impregnated media 4a and 4b can be polymerized into a plurality of layers, thereby increasing the gap through which the resin can circulate without increasing the mesh size. Therefore, the flow path cross section of the resin to be supplied can be increased.

  The resin supply nozzle 6 and the resin suction nozzle 9 have a tube shape extending in a direction perpendicular to the flow, and the axial length thereof is the same as or slightly shorter than the width of the core material 2. Resin supply ports 16 are formed at a predetermined pitch in the resin supply nozzle 6, and resin suction ports 17 are formed at a predetermined pitch in the resin suction nozzle 9. The resin supply port 16 and the resin suction port 17 are provided downward. By providing at least the resin supply port 16 downward or substantially downward, the flow of resin discharged from the resin supply port 16 is changed from the downward direction to the horizontal direction, and the velocity distribution is changed in the process of changing the flow. Is eliminated, and the uniform speed distribution in the width direction is promoted.

  A liquid resin is supplied from the resin supply nozzle 6 in the width of the axial length of the resin supply nozzle 6, and the resin suction nozzle 9 sucks in the width of the axial length of the resin suction nozzle 9, and the resin supply nozzle From 6 to the resin suction nozzle 9, a resin flow having the width of the axial length is formed.

  The resin supply nozzle 6, the resin supply port 16 formed in the resin suction nozzle 9, and the resin suction port 17 have a uniform pitch so that the flow rate is uniform over the entire width according to the molding conditions of the fiber reinforced plastic. Set to Further, in the drawing, the upstream liquid feeding tube 7 communicates with the resin supply nozzle 6 at one place, but the upstream liquid feeding tube 7 branches to communicate with the resin supply nozzle 6 at a plurality of places. Also good. Similarly, the downstream liquid feeding tube 11 may communicate with the resin suction nozzle 9 at a plurality of locations.

  The flow rate adjusting valve 18 is provided at a required position of the downstream liquid feeding tube 11, and the resin flow rate can be adjusted by the flow rate adjusting valve 18.

  Hereinafter, the method for molding a fiber reinforced plastic according to the present invention will be described with reference to FIG.

  A mold release agent is applied to the mold 1 and the core material 2 is installed. Examples of the mold release agent include grease such as silicon or fluororesin (STEP: 01).

  The core material 2 is covered with the release sheet 3, the impregnating media 4a and 4b, and the sealing sheet 5 sequentially.

  The impregnating media 4a and 4b have at least two layers, and the impregnating media 4a provided on at least the core material 2 side has fine meshes in consideration of the surface roughness and properties of the finished molded product. . The impregnation medium 4 provided in two or three layers may be a fine mesh having the same fineness as that of the impregnation medium 4a (for example, having 24 or more meshes). A coarser mesh than 4a (for example, the number of meshes is 14 or less) can also be used (STEP 02).

  In addition, by increasing the roughness of the two layers of the impregnating medium 4b with respect to the one layer of the impregnating medium 4a, a gap formed by the impregnating media 4a and 4b is increased, and the impregnating medium 4a and the impregnating medium 4b are increased. The mesh pitch varies between the media 4b, the interference between the meshes is avoided, and the work of polymerizing the impregnated media 4a and 4b becomes easy.

  When the installation of the release sheet 3 and the impregnating media 4a and 4b is completed, the resin supply nozzle 6 is installed on the upstream side of the core material 2, and the resin suction nozzle 9 is installed on the downstream side of the core material 2. . Further, the sealing sheet 5 is covered, and the periphery of the sealing sheet 5 is brought into close contact with the mold 1 to form an airtight space 10 for housing the core material 2 between the sealing sheet 5 and the mold 1 ( Packing) (STEP 03). In addition, as a method of contact | adhering, a double-sided adhesive tape may be used, or the circumference | surroundings may be pressed with a frame.

  The upstream liquid feed tube 7 is communicated with the resin supply nozzle 6. The resin supply nozzle 6 and the upstream liquid feed tube 7 may be integrated in advance.

  The downstream liquid feeding tube 11 is communicated with the resin suction nozzle 9. Similarly, the downstream liquid feeding tube 11 and the resin suction nozzle 9 may be integrated.

  The upstream liquid feed tube 7 is connected to the resin supply source 8, the downstream liquid feed tube 11 is connected to the vacuum pump 12, and the flow rate adjusting valve 18 and the trap 13 are attached to the downstream liquid feed tube 11. . The downstream liquid feeding tube 11 is divided on the upstream side of the flow rate adjusting valve 18 of the downstream liquid feeding tube 11 so that it can be connected via a pipe joint, and the divided downstream liquid feeding tube 11 is connected to the downstream liquid feeding tube 11. The flow rate adjusting valve 18, the trap 13, and the vacuum pump 12 may be integrated into an exhaust / drain unit.

  The upstream liquid feeding tube 7 is closed by a required means such as an on-off valve (not shown). The upstream liquid feeding tube 7 may be provided with an opening / closing valve, and the upstream liquid feeding tube 7 may be opened / closed by the opening / closing valve. The flow rate adjusting valve 18 is opened and the space 10 is sucked and exhausted from the vacuum pump 12. The suction time is set to a time during which the air, moisture and the like inside the core material 2 are sufficiently exhausted (STEP: 04).

  The on-off valve of the upstream liquid feeding tube 7 is opened, and the liquid resin is fed to the resin supply nozzle 6 through the upstream liquid feeding tube 7. The liquid resin is dispersed from the resin supply port 16 of the resin supply nozzle 6 and supplied to the space 10. The suction of the space 10 causes the sealing sheet 5 to be in close contact with the impregnating media 4a and 4b, but the impregnating media 4a and 4b secure a gap through which the resin can flow.

  In one direction of the space 10, that is, from the resin supply nozzle 6, toward the other side, that is, the resin suction nozzle 9, the liquid resin flows through the impregnating media 4a and 4b and passes through the impregnating media 4a and 4b. The resin is sucked by the resin suction nozzle 9 and collected in the trap 13. In the process in which the liquid resin flows through the impregnating media 4a and 4b, the core material 2 is soaked. The time for the resin to completely penetrate into the core material 2 (impregnation time) is determined in advance by experiments or the like (STEP: 05).

  As described above, since the impregnated media 4a and 4b are formed in a plurality of layers, the gap formed by the impregnated media 4a and 4b, that is, the cross section of the flow path through which the resin flows increases, the flow rate of the resin increases, The impregnation speed of the resin into the core material 2 is increased, and the impregnation time can be shortened.

  When the set impregnation time elapses, the valve of the upstream liquid feeding tube 7 is closed, and the flow rate adjusting valve 18 is closed to stop the supply of the resin.

  In the state where the space 10 is kept airtight, that is, in a state where the pressure is reduced, the upstream liquid feeding tube 7 is divided to separate the resin supply source 8 from the sealing sheet 5 and the resin supply nozzle 6. Further, the downstream liquid feeding tube 11 is divided upstream of the flow rate adjusting valve 18 of the downstream liquid feeding tube 11, and the sealing sheet 5, the resin suction nozzle 9 and the flow rate adjusting valve 18 are separated. The reason why the airtightness is maintained is that the thickness of the molded product is increased by the amount that cannot be airtight unless the vacuum is maintained.

  The impregnated resin is cured. The curing of the resin is appropriately selected depending on the material of the impregnated resin and the shape of the molded product, such as when performing curing at normal temperature or when performing heat curing at 100 ° C. to 120 ° C. (STEP: 06).

  When heat curing is performed, the mold 1 and the mold 2 are packed in the furnace with the core material 2 packed therein and heated for a required time.

  When the curing is completed, the sealing sheet 5, the impregnated media 4a and 4b, and the release sheet 3 are peeled off, and the completed molded product is taken out (STEP: 07).

  As described above, since the mesh of the impregnating media 4a adjacent to the core material 2 is fine among the plural layers of impregnating media 4a and 4b, the surface finishes smoothly.

  In addition, the impregnation media 4 can also be made into 3 layers and 4 layers. When the number of layers is three or more, it is preferable to make the mesh of the impregnating medium 4 of the intermediate layer coarse and to make the mesh of the lower layer (layer adjacent to the core material 2) and the upper layer smaller. Similarly to the lower meshes, the upper meshes tend to be transferred to the surface of the molded product. By making the upper meshes finer, the smoothness of the molded product surface can be improved.

It is sectional drawing which shows the outline of the fiber reinforced plastic manufacturing apparatus which concerns on embodiment of this invention. It is a top view which shows the outline of this fiber reinforced plastic manufacturing apparatus. It is a flowchart which shows the outline of the shaping | molding method of the fiber reinforced plastic which concerns on embodiment of this invention. It is sectional drawing which shows the outline of the conventional fiber reinforced plastic manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold 2 Core material 3 Release sheet 4 Impregnation media 5 Sealing sheet 6 Resin supply nozzle 7 Upstream liquid feed tube 8 Resin supply source 9 Resin suction nozzle 10 Space 11 Downstream liquid feed tube 12 Vacuum pump 13 Trap 15 Fiber reinforced plastic manufacturing apparatus 16 Resin supply port 17 Resin suction port 18 Flow control valve

Claims (12)

  A fiber reinforced plastic is provided in which a core material is installed in a mold, the core material is airtightly covered with a sealing sheet, the inside of the sealing sheet is evacuated, and then the resin is poured into the sealing sheet to impregnate the core material. In the molding method, a plurality of layers of impregnation media are interposed between the core material and the sealing sheet, a gap is formed inside the sealing sheet, a resin is supplied from one of the sealing sheets, and from the other A method for molding a fiber reinforced plastic, wherein the resin is discharged to form a unidirectional resin flow.   The method for molding fiber-reinforced plastic according to claim 1, wherein the impregnating media of the plurality of layers have different mesh sizes between layers.   The method for molding a fiber reinforced plastic according to claim 1 or 2, wherein the impregnating media of the plurality of layers has at least a mesh size of the impregnating media of the layer adjacent to the core material.   3. The fiber-reinforced plastic molding according to claim 1 or 2, wherein when the plurality of layers of impregnating media are three or more layers, at least the mesh of the impregnating media adjacent to the core material and the upper layer of the impregnating media is reduced. Method.   Resin is supplied over the entire width or substantially the entire width of the core material, the resin is sucked over the entire width or the substantially entire width of the core material, and a uniform flow is formed in the width direction inside the sealed sheet. A method for molding a fiber-reinforced plastic according to any one of claims 1 to 4.   The method for molding fiber-reinforced plastic according to claim 1 or 5, wherein the resin is supplied at least in a resin supply portion so that the flow is in a direction different from the flow inside the sealing sheet.   A mold on which the core material is installed, a release sheet that sequentially covers the core material, a plurality of layers of impregnated media, a resin supply nozzle disposed on one side of the core material, and a resin suction disposed on the other side A nozzle, a core sheet, the release sheet, the impregnation medium, the resin supply nozzle, a sealing sheet covering the resin suction nozzle and hermetically packing, an exhaust device for evacuating the inside of the sealing sheet, and the resin supply An apparatus for producing fiber-reinforced plastic, comprising: a resin supply source connected to a nozzle; and a resin discharge unit connected to the resin suction nozzle.   The fiber-reinforced plastic manufacturing apparatus according to claim 7, wherein the plurality of layers of impregnating media have different mesh sizes between layers.   9. The fiber-reinforced plastic manufacturing apparatus according to claim 7, wherein the impregnating media of the plurality of layers has a mesh size of at least a layer of the impregnating media adjacent to the core material.   The fiber-reinforced plastic according to claim 7 or 8, wherein when there are three or more layers of impregnated media, at least the mesh media of the impregnated media of the layer adjacent to the core material and the impregnated media of the upper layer are made small. apparatus.   The resin supply nozzle and the resin suction nozzle have a tube shape having a length equivalent to or slightly shorter than the width of the core material, and the resin supply nozzle is provided with a resin supply port at a required pitch, 8. The apparatus for producing fiber-reinforced plastic according to claim 7, wherein the resin suction nozzle is provided with resin suction ports at a required pitch.   The apparatus for producing a fiber-reinforced plastic according to claim 6 or 11, wherein at least a resin supply port provided in the resin supply nozzle is provided in a direction different from a flow of resin inside the sealing sheet.

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