JP2009012441A - Method for manufacturing fiber-reinforced resin molded article capable of recycling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a composite resin molded article where molding is facilitated, and further, a molded article can be manufactured at high precision. <P>SOLUTION: Fiber-reinforced stocks (130, 130', 130'') obtained by packing filler-shaped or powder-shaped reinforcing fiber raw materials of ≥60 wt.% into a matrix resin are used. The fiber-reinforced stocks are crushed, and the crushed pieces of the fiber-reinforced stocks are arranged on a flat face or on a face with a prescribed cubic shape, are heated, pressurized, and are made close together and integrated, so as to manufacture composite resin molded articles (131, 131'') with a prescribed shape. As the raw materials for the fiber-reinforced stocks, various non-flammable reinforcing fibers can be used. Further, as the matrix resin, various thermoplastic resins can be used. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a renewable fiber reinforced resin molded article.

  For example, fiber reinforced plastic FRP generally uses a thermosetting resin such as unsaturated polyester. In some cases, an epoxy resin, a polyamide resin, or a phenol resin is used. In addition to the hand lay-up method and spray-up method in which fiber aggregates are laid on the mold and the resin mixed with the curing agent is defoamed and laminated, the aggregate and resin are mixed in advance. SMC press method that compresses and molds the sheet-like material with a mold, and a method that "fires and hardens" a material (prepreg, etc.) that has been pre-familiar with fiber and matrix (adhesive) in a large kiln (autoclave) .

  Because it is inexpensive, lightweight and durable, it occupies a large position in advanced technologies such as aerospace and space, as well as small ship hulls, interior and exterior of automobiles and railway vehicles, housing equipment such as unit baths and septic tanks, etc. Yes. However, it is disadvantageous that it is almost impossible to recycle because it is molded in a mixed state of different materials and the thermosetting resin is a matrix resin.

  Therefore, in recent years, as an alternative to glass fiber reinforced resin (GFRP), there are also announcements using recyclable thermoplastics such as methyl methacrylate. However, as described above, if the thermosetting resin is not used as a matrix, it has a predetermined strength. Is difficult to obtain, and when a thermoplastic resin is used, it becomes a special production method. For example, there is stampable sheet molding using a fiber reinforced thermoplastic resin sheet, but here we have developed a sheet manufacturing method that is different from the conventional method by using a "split-splashing device". (Robbing) and thermoplastic resin fibers (sliver) are simultaneously supplied, and the fibers are cut, separated and mixed in the apparatus, and a composite mat in which both fibers are uniformly mixed is continuously produced (independently). National Institute of Advanced Industrial Science and Technology). However, since it lacks versatility, it is not practical. On the other hand, as a recycling method, automobile interior materials using FRP substrates are used as recycled materials, thermoplastic resin pellets are used as matrix materials, and recycled materials and matrix materials are reduced to 10 mm or less by the grinding process. The pulverized regenerated raw material and the matrix raw material are agitated by the stirring and mixing step, and the stirred regenerated raw material and the matrix raw material are mixed together by rubbing them together. And the matrix raw material are rubbed together to reduce the volume, and then the recycled raw material and the matrix raw material reduced in volume are put into the extruder 2 together, and the recycled product R obtained by melting and integrating the recycled raw material and the matrix raw material is obtained. Only a method for recycling an automotive interior material to be extruded has been proposed (Patent Document 1).

JP 2006-264060 A

As a result of diligent research, the present inventor usually has a fiber filling amount for resin reinforcement of about 40% by weight at most with respect to the thermosetting resin due to limitations from molding technology, etc. Although it was found that when the filling amount of the reinforcing fiber of 60% by weight or more is realized, the physical properties comparable to FRP using a thermosetting resin as a matrix can be obtained. If the amount is 60% by weight or more, it is not possible at all by ordinary extrusion molding. Even if the SMC pressing method (Sheet Molding Compounds) is used, the prescribed SMC sheet (base material / resin / filler is kneaded) It is difficult to prepare a sheet).
Therefore, even when it is impossible for the inventor to directly form a molded product having a fiber filling amount of 60% by weight or more, when using a thermoplastic resin, the fiber-reinforced composite material once kneaded and solidified is crushed or When crushed and used as a molding material, a fiber content of 60% by weight or more, preferably 70% by weight or more and 85% by weight can be blended, and when this is molded, the fiber orientation is random and up and down. It was found that even if a thermoplastic resin is used as a matrix resin, a very ideal fiber reinforced resin product can be produced.

The present invention provides a pulverized or crushed piece of a fiber reinforced material prepared by kneading 40 to 15% by weight of a thermoplastic resin with 60 to 85% by weight of an incombustible fiber raw material and solidifying the reinforced or crushed piece. A method for producing a fiber-reinforced resin molded product, characterized in that fiber directions are randomly oriented, filled in a predetermined mold, heated and pressed, and pulverized or crushed pieces are closely integrated to produce a composite resin molded product. It is in.
In the present invention, the reinforcing fiber is selected from non-combustible reinforcing fibers such as glass fiber, carbon fiber and fiber boron, and the thermoplastic resin may be selected from various thermoplastic resins according to the use of FRP. , Dimensions, filling amount, etc. For example, PP (polypropylene), PC (polycarbonate) and the like are preferable for structural materials such as automobile bodies and small ship hull materials. Further, for the purpose of improving the kneadability with the reinforcing fiber, two or more thermoplastic resins that are compatible can be blended and adjusted.

  The present invention was invented based on a method for coloring artificial marble, and 40 to 15% by weight of transparent or translucent heat with respect to one or more colored 60 to 85% by weight of incombustible fiber raw material. When preparing a pulverized or crushed piece of a fiber reinforced material kneaded and solidified with a plastic resin, the fiber raw material is preferably colored, and glass fiber can be colored and used. It is also possible to prepare a pulverized or crushed piece of a fiber reinforced material obtained by kneading and solidifying a thermoplastic resin colored in the same system with a colored incombustible fiber raw material. It may be a coloring material.

  According to the present invention, even in the case of FRP in which the viscosity increases during production due to high filling of reinforcing fibers and it is difficult to form into a desired shape, the fiber-reinforced material is crushed or crushed and heated and pressed. Can be easily formed into a desired shape. For example, when a reinforcing fiber and a resin for imparting incombustibility or flame retardancy are kneaded at a weight ratio of 60:40, the viscosity gradually increases, and for example, it is very difficult to form into a thin plate. In the invention, the pulverized pieces or crushed pieces of the fiber reinforced material are arranged and heated and pressed to form, so even a fiber reinforced material of highly filled fibers can be easily formed into a thin plate. Moreover, in the present invention, the reinforcing fibers in the crushed pieces do not have a constant orientation and are randomly arranged, and these are repeatedly heated and pressed, so that the orientation of the fibers is random and superimposes vertically, which is far beyond prediction. Strength can be secured. Furthermore, since the matrix resin is a thermoplastic resin, when the fiber reinforced resin molded product is discarded, it can be used as a new raw material for the composite resin molded product by collecting and crushing the resin molded product. Is excellent.

  The raw material of the fiber reinforced material, for example, the reinforcing fiber is kneaded with the matrix resin, but kneaded with a kneader, extruded with stirring with a single or biaxial extruder, or kneaded with a kneader, then uniaxial or 2 The fiber raw material and the matrix resin can be kneaded by transferring to a shaft extruder and further stirring.

  The feature of the present invention resides in that a kneaded and solidified fiber reinforced material is pulverized or crushed, and these are arranged, heated and pressurized to produce a thin sheet, a slightly thick plate-shaped or three-dimensional composite resin molded product. The moisture content of the reinforcing fiber may be heated with another heat source to evaporate the moisture content before kneading with the molten matrix resin, or strengthened when the molten matrix resin and a plurality of reinforcing fibers are kneaded. The fibers may be heated by the heat of the matrix resin to evaporate the moisture content of the reinforcing fibers. If it does in this way, the drying process of a reinforcement fiber is not required separately, but a manufacturing process can be simplified.

  When recycling used fiber reinforced materials, the recovered fiber reinforced materials are crushed to an appropriate size, for example, a size such that the three-dimensional shape of the reinforced fibers remains, for example, 5 mm to 20 mm on a side, The matrix resin can be softened or melted by heating with an appropriate heat source, and the matrix resin can be added as necessary, and used as all or part of the raw material of the fiber reinforced material.

  Even when used fiber reinforced materials are recycled into new fiber reinforced materials, it is necessary to maintain an appropriate ratio of raw material to matrix resin.

  When a surface resin layer is formed on a composite resin molded product, it may be formed by stacking a softened or melted synthetic resin material on the surface of the composite resin molded product, or a synthetic resin film, sheet or plate is laminated. Can also be formed. The surface resin layer of the composite resin molded product may be formed on the entire outer surface of the composite resin molded product, or may be formed only on a part of the outer surface, for example, the upper surface or the lower surface of the plate-shaped composite resin molded product.

  Composite resin molded products can be molded into a predetermined product shape by forming a surface resin layer, but a synthetic resin film, sheet or plate is laminated on the surface of the composite resin molded product, or softened or melted. When the synthetic resin materials are stacked, they can be molded into a predetermined product shape. For molding this composite resin molded product, a die, a roller, or the like is used, and drawing molding, bending molding, vacuum molding, pressure molding, match molding, or the like can be employed.

  The synthetic resin film, sheet or plate and the composite resin molded product may be bonded to each other by an adhesive, and bonded to each other depending on the affinity between the matrix resin of the composite resin molded product and the synthetic resin material of the surface resin layer. You may make it do.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. FIG. 1 shows a preferred embodiment of a method for producing a renewable fiber-reinforced resin product according to the present invention. When manufacturing fiber reinforced resin products, various reinforcing fiber materials are prepared. In addition to long fibers and short fibers, the reinforcing fibers may be powdery having an average outer diameter of 10 μm to 35 μm.

  Also, a resin, for example, a thermoplastic resin such as an appropriately sized chip-shaped polypropylene or polyethylene is prepared. These resins may be one kind or a mixture of two kinds.

  On the other hand, the heater of the kneading machine 10 is operated, and the inside of the kneading machine 10 is raised to a melting temperature of the thermoplastic resin, for example, a temperature in the range of 100 ° C. to 300 ° C., and FIG. As shown, the crushed thermoplastic resin chips are put into the kneader 10 and melted with stirring. Binder resin chips may be charged at once, or may be divided into a plurality of times. When heat is generated by stirring the molten resin by rotation of the stirring blade during melting of the binder resin, the heating temperature by the heater may be slightly lower than the melting temperature of the binder resin.

  When the thermoplastic resin is sufficiently softened or melted, the prepared fiber raw material, for example, glass fiber, is fed into the kneader 10 in one time or a plurality of times, and the colorant, for example, the paint is divided in one time or a plurality of times. Then, the mixture is put into the kneader 10 and the softened and melted thermoplastic resin, the filler and the colorant are kneaded so as to be substantially uniform. If a large amount of filler is added at a time, the temperature of the softened and melted resin may decrease. Therefore, the raw material of the fiber reinforced material is preliminarily set to an appropriate temperature with a heater or the like before being added to the kneader 10. You may heat.

  Further, if the thermoplastic resin is heated for a long time in a molten state, the original physical properties of the resin may be impaired. Therefore, it is preferable to complete the kneading in a short time after sufficiently melting. According to the experiments of the present inventors, it has been found that the time from melting to completion of kneading is preferably about 5 to 30 minutes. However, the optimum time varies depending on the heating temperature and the physical properties of the thermoplastic resin. Should be obtained by experimentation.

  After sufficient kneading, as shown in FIGS. 1 (b) and 1 (c), the kneaded product 20 is taken out and is crushed by a crusher 11, for example, in a granular or flaky shape with a side of 3 to 40 mm. Or crush into a lump. The size of the crushed particles, crushed pieces or crushed lump 21 is not particularly limited because it is caused to flow by pressurization in a later step.

  Similarly, as shown in FIG. 1 (d), crushed grains, crushed pieces or crushed pieces 21 of different colors, for example, white, black, brown, blue, are produced.

  When crushed grains, crushed pieces or crushed lumps 21 of a plurality of colors are obtained in this way, these are arranged on the molding surface, for example, the lower mold surface of the heated mold 12 as shown in FIG. Heat with the upper mold. Then, since the thermoplastic resins of different colors are integrated with each other while flowing, when the surface is taken out and the surface is polished after the temperature is lowered, it seems to be a polished surface pattern as shown in FIG. Fiber reinforced resin products can be obtained.

Hereinafter, the second embodiment will be described in detail based on specific examples.
FIG. 2 shows a preferred embodiment of a method for producing a fiber-reinforced resin molded article according to the present invention, which is an example in which reinforcing fibers are used as a raw material for a fiber-reinforced material. When manufacturing the composite resin molded article of this example, waste fiber reinforced resin can be crushed with a crusher and prepared as a reinforced fiber, for example. Further, for example, a matrix resin derived from waste plastic, such as polypropylene or polyethylene, is crushed into chips of an appropriate size by a crusher. These may be one type or a mixture of two types.

  On the other hand, the heater of the kneading machine 110 is operated, and the inside of the kneading machine 110 is raised to the melting temperature of the matrix resin, for example, a temperature in the range of 100 ° C. to 300 ° C., and the crushed matrix resin chips are kneaded. It is put into the machine 110 and melted while stirring. The matrix resin chip may be charged at once or may be divided into a plurality of times. When heat is generated by stirring the molten resin by rotation of the stirring blade during the melting of the matrix resin, the heating temperature by the heater may be slightly lower than the melting temperature of the matrix resin.

  When the matrix resin is sufficiently melted, the prepared reinforcing fibers are put into the kneading machine 110 at one time or divided into a plurality of times, and kneaded so that the molten matrix resin reliably coats the surface of the reinforcing fibers. If a large amount of reinforcing fibers are added at once, the temperature of the molten resin may decrease. Therefore, the reinforcing fibers may be preheated to an appropriate temperature with a heater or the like before being added to the kneader 110. . In this case, since the contained water evaporates to some extent, the kneading time in the kneader 110 can be shortened.

  In addition, if the matrix resin is heated in a molten state for a long time, the original physical properties of the resin may be impaired. Therefore, it is preferable to complete the kneading in a short time after sufficiently melting. According to the experiments of the present inventors, it has been found that the time from melting to completion of kneading is preferably about 5 to 30 minutes, but it varies depending on the temperature of the matrix resin and the drying state of the reinforcing fibers. It is better to find the appropriate time by experimentation.

  Further, at the time of kneading, the reinforcing fiber is heated by the high heat of the molten resin, for example, 100 ° C. to 300 ° C., and the moisture contained in the reinforcing fiber is evaporated and diffused from the opening of the kneader 110. Therefore, the moisture content of the reinforcing fiber and wood powder is greatly reduced. In the case where the kneader 110 is a hermetically sealed type, the steam is dissipated intermittently with a certain time interval.

  When the reinforcing fiber component and the molten matrix resin are sufficiently kneaded, the kneaded product is supplied to the roller press 111, and the kneaded product is sandwiched and fed with a predetermined strong pressure to maintain the strong pressure state and the matrix resin. Is cured. The roller type press 111 is constructed by belting the upper and lower roller rows endlessly. Further, it is preferable that the roller on the end side is cooled with water so that the kneaded material is cooled in a strong pressure state. In place of water cooling, air may be blown for cooling.

  Further, when the matrix resin is softened by heating, it thickens and sticks to the roller or the like. However, when the reinforcing fiber is added and kneaded as described above, the adhesiveness is lowered, and processing by the roller becomes possible.

  The feed speed of the kneaded product is set to a speed at which the kneaded product is sufficiently hardened when it exits the roller train. Further, the pressure applied by the upper and lower roller rows is such that a surface pressure of 19.6 × 10 5 Pa (20 kgf / cm 2) is applied, but the surface pressure is 18.8 × 10 5 Pa (20 kgf / cm 2) or more and 58.8. From the range up to about × 10 5 Pa (60 kgf / cm 2), it may be set as appropriate according to the use or material of the composite wood, and a larger surface pressure can be applied if necessary.

  When the kneaded material is sufficiently cured in this way, a fiber reinforced material 130 in which a plurality of reinforcing fibers and a matrix resin are strongly bonded to each other is obtained. You may make it obtain as a semi-finished product of the fiber reinforced raw material 130 by making small the pressurizing force in the roller type press 111, or making feed speed high.

  The obtained fiber reinforced material 130 is crushed by a crusher 112 to an appropriate size, for example, a size of 3 mm to 20 mm on a side. The size of the crushed pieces is not particularly limited as long as the fiber reinforced material 130 can be sufficiently softened or melted and processed into a plate with high dimensional accuracy in a later step.

  Then, the crushed pieces of the fiber reinforced material 130 are put into the heating device 113 and softened by heating, while the roller press 114 is heated, and the crushed pieces of the fiber reinforced material 130 are pushed out to the roller press 114 and arranged. The plate-shaped composite resin molded product 131 is manufactured by pressing with a roller press 114.

  This plate-shaped composite resin molded article 131 is pressed to a thickness obtained by subtracting the thickness of the surface resin layer from the thickness of the product, but since the reinforcing fiber and the matrix resin are already combined with high strength, It is possible to press with a pressurizing force that provides high dimensional accuracy.

  Next, the obtained composite resin molded product 131 is fed into a roller press 115 while laminating a film 132 (may be a sheet or a plate) made of resin, for example, polypropylene or polyethylene, and heated to heat the composite resin molded product 131. A surface resin layer is formed by bonding the film 132 to the surface. The surface resin layer may be formed on the upper surface, the lower surface, and the side surface of the composite resin molded product 131 by repeating the same operation.

  When the product material 133 is obtained in this way, the product 134 is obtained by setting the material 133 in, for example, the mold 116 and heating and pressing it into a predetermined three-dimensional shape. As shown in FIG. 3, the product 134 has a structure in which the surface of the fiber reinforced material 134A is covered with the resin layer 134B, and when viewed from the surface, the entire product 134 appears to be manufactured only from the resin.

  FIG. 4 shows a third embodiment, in which the same reference numerals as those in FIG. 2 denote the same or corresponding parts. In this example, instead of the roller press 111, a single- or twin-screw extruder 111 ′ is used to produce a fiber reinforced material 130 ′ with a not-high pressure, and this is crushed in the crushing step 112. Yes. This is because the composite resin molded article 131 is manufactured by heating and pressurizing the crushed pieces in the subsequent process, and therefore it is not always necessary to firmly bond the reinforcing fiber and the matrix resin in the manufacturing process of the fiber reinforced material 130 ′. This is because it may be a semi-composite material in which a matrix resin is invaded into a part of the microcavity on the surface side of the fiber.

  Note that the kneading machine 110 is not necessarily used, and as shown in FIG. 5, the reinforcing fibers and the matrix resin can be put into the extruder 111 'and kneaded.

  Further, in this example, the crushed pieces of the fiber reinforced material 130 ′ are supplied to the roller press 114 as the crushed pieces by the feeder 113 ′ instead of the extruder 113, arranged on a plane and heated and pressed to form a plate-shaped composite resin The molded product 131 is manufactured.

  FIG. 6 shows a fourth embodiment, in which the same reference numerals as those in FIG. 4 denote the same or corresponding parts. In this example, when the product material 133 is manufactured by the roller press 115, the resin softened or melted by the extruder 117 is extruded onto the plate-shaped composite resin molded product 131 to form a surface resin layer. Yes.

  FIG. 7 shows a fifth embodiment, in which the same reference numerals as those in FIGS. 2 to 5 denote the same or corresponding parts. In this example, instead of the roller type press 115 for pressing the material 133 of the product, the mold 116 is used, and the composite resin molded product 131 and the resin film 132 are laminated between the lower die 116A and the upper die 116B. The composite resin molded product 131 and the resin film 132 are joined by heating and pressurizing to form a resin layer on the surface of the composite resin molded product 31, and simultaneously molding into a predetermined product shape. Yes.

  In the fifth embodiment, the base 131 and the resin film 132 are laminated and set on the lower mold 116A. However, the crushed pieces of the fiber reinforced material 130 or 130 ′ are formed on the molding surface of the lower mold 116A. A product-shaped composite resin molded product is manufactured by placing the product on the (product-shaped surface) and pressurizing with the upper mold 116B, and then forming a surface resin layer by stacking the resin film 132 and pressing with the upper mold 116B. It may be. Further, the crushed pieces of the fiber reinforced material 130 or 130 ′ are arranged on the molding surface (product shape surface) of the lower mold 116A, and the resin film 132 is stacked thereon and heated, and the upper mold 116B pressurizes the product. A composite resin molded product having a shape and a surface resin layer can also be formed.

  Further, instead of the roller type press machine 111 for producing the fiber reinforced material 130 or 130 ', strong pressing may be performed using a mold, and the matrix resin is cured by repeating strong pressing and cooling through a multistage roller. Thus, the fiber reinforced material 130 or 130 ′ may be manufactured.

  In the above example, the fiber reinforced material 130 or 130 ′ is manufactured and crushed to produce a composite resin molded product. However, the discarded composite wood or composite resin molded product is recovered to obtain the composite wood. And a composite resin molded product can also be produced using this as a raw material.

  FIG. 8 shows a sixth embodiment, which is an example in which carbon fiber is used as a raw material of the fiber reinforced material. When producing the composite resin molded product of this example, one having an average length of 5 to 15 mm is used. On the other hand, an appropriate size of polycarbonate is prepared as a matrix resin.

  On the other hand, the heater of the kneading machine 110 is operated to raise the inside of the kneading machine 110 to the softening temperature of the matrix resin, and the matrix resin is put into the kneading machine 110 and softened while stirring. The matrix resin may be charged at a time or may be divided into a plurality of times.

  When the matrix resin is sufficiently softened, the prepared carbon fiber content of 70 parts for both 30 parts of the resin is put into the kneader 110 at one time or divided into a plurality of times to sufficiently knead with the softened matrix resin. To do. When the matrix resin is heated for a long time, the original physical properties of the resin may be impaired. Therefore, it is preferable to complete the kneading in a short time after sufficiently melting.

  When the reinforcing fiber component and the matrix resin are sufficiently kneaded, when the kneaded product is taken out from the kneader 110, a fiber reinforced material 130 ″ is obtained. The fiber reinforced material 130 ″ is crushed by a crusher 112 to an appropriate size, for example, a side of 3 mm to 20 mm. The size of the crushed pieces is not particularly limited as long as the fiber reinforced material 130 '' can be sufficiently softened or melted and processed into a plate with high dimensional accuracy in a later step.

  Then, the crushed pieces of the fiber reinforced material 130 ″ are put into the feeder 113, and the crushed pieces of the fiber reinforced material 130 ″ are arranged on the roller-type press 114, and the roller-type press 114 has an appropriate temperature, for example, 160 °. Heat to about C to soften the matrix resin of the crushed pieces and pressurize to produce a plate-shaped composite resin molded product 131 ″.

  The obtained composite resin molded product 131 '' is provided with sufficient structural strength by highly filled carbon fibers, and can be used for structural materials for automobiles and ships.

  Also, instead of polycarbonate (PC), polypropylene (PP) / ethylene / vinyl acetate copolymer (EVA) resin is used, glass fiber is used as the reinforcing fiber, glass fiber 80% by weight, PP 15% by weight, EVA 5% by weight A composite resin plate having an extremely smooth surface was obtained, and the thickness could be arbitrarily set to 1.5 mm or more.

It is a figure which shows typically 1st Embodiment of the manufacturing method of the fiber reinforced resin molded product which concerns on this invention. It is a figure which shows typically 2nd Embodiment of the manufacturing method of the fiber reinforced resin molded product which concerns on this invention. It is sectional drawing of the fiber reinforced resin molded product obtained in the said embodiment. It is a figure which shows 3rd Embodiment typically. It is a figure which shows the modification of 4th Embodiment. It is a figure which shows 5th Embodiment typically. It is a figure which shows the process of the metal mold | die shaping | molding in 6th Embodiment. It is a figure which shows 6th Embodiment typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Kneading machine 11 Crushing machine 12 Mold 20,20 ', 20''Mixture21,21', 21 '', 22 'Crushing grain, crushing piece, crushing lump 110 Kneading machine 111 Roller type press machine 111' Extruder 112 Crusher 113 Extruder 113 'Feeder 114 Roller press 115 Roller press 16 Mold 130, 130', 130 '' Fiber reinforced material 131, 131 '' Composite resin molded product 132 Synthetic resin film 133 Product material 134 Auto body products

Claims (7)

  Prepare pulverized or crushed pieces of fiber reinforced material obtained by kneading 40 to 15% by weight of thermoplastic resin with 60 to 85% by weight of non-combustible fiber raw material, and randomly laying the fibers in the crushed or crushed pieces A regenerated fiber reinforced resin molded product characterized by producing a reinforced fiber high-filled resin molded product by packing into a predetermined mold, heating and pressurizing, and compacting and integrating crushed or crushed pieces. Production method.   The method for producing a fiber-reinforced resin molded article according to claim 1, wherein the fiber raw material is selected from reinforcing fibers such as glass fiber, carbon fiber, and fiber boron.   The method for producing a fiber-reinforced resin molded article according to claim 1, comprising two or more thermoplastic resins in which the thermoplastic resin is compatible.   Prepare pulverized or crushed pieces of fiber reinforced material that is solidified by kneading 40 to 15% by weight of transparent or translucent thermoplastic resin to one or two or more colored 60 to 85% by weight of non-combustible fiber material Then, the fiber direction in the crushed or crushed pieces is randomly oriented, filled in a predetermined mold, heated and pressed, and the pulverized or crushed pieces are closely integrated to produce a reinforced fiber highly filled resin molded product. A method for producing a renewable fiber-reinforced resin molded product characterized by the above.   The method for producing a fiber-reinforced resin molded product according to claim 4, wherein the fiber raw material is a colored glass fiber.   Prepare a pulverized or crushed piece of a fiber reinforced material obtained by kneading and solidifying 40 to 15% by weight of a colored thermoplastic resin in 60 to 85% by weight of a colored incombustible fiber raw material. Recyclable, characterized in that the fiber direction in the pieces is randomly oriented, filled into a predetermined mold, heated and pressed, and crushed or crushed pieces are closely integrated to produce a highly reinforced fiber molded resin product Method for manufacturing a fiber-reinforced resin molded article.   The method for producing a fiber-reinforced resin molded article according to claim 6, wherein the pulverized or crushed pieces are two or more kinds of different colored materials.

Images