JP2011094247A - Fiber-reinforced sheet and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber-reinforced sheet hardly causing problems of the coming apart of a plurality of fiber-reinforced plastic wires parallelled into a bamboo blind shape even when carrying out the treatment such as transportation and sticking operation, and to provide a method for producing the sheet. <P>SOLUTION: The method for producing the fiber-reinforced sheet includes parallelling a plurality of the parallelly arranged fiber-reinforced plastic wire materials in the longitudinal direction, and holding the plurality of the fiber-reinforced plastic wire materials in a sheet shape with a wire material-fixing material. The wire material-fixing material 3 is a thermoplastic resin-covered yarn having a core material F using filaments, and the thermoplastic resin layer Rf covering the surrounding of the core material F. The fiber proportion (S2/S1)×100 is 2-30% (wherein, S1 is the cross section area of the wire material-fixing material 3, and S2 is the cross section area of the core material F), and a plurality of the fiber-reinforced plastic wire materials 2 is stuck by heating the wire material-fixing material 3 and pressurizing wire material-fixing material 3 to the fiber-reinforced plastic wire materials 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fiber reinforced sheet continuous in the longitudinal direction, which is produced by arranging thin fiber reinforced plastic wires in a sheet shape, and a method for producing the same. The fiber reinforced sheet of the present invention is bonded to, for example, a concrete structure or a steel structure (which is simply referred to as a “structure” including a concrete structure and a steel structure) that is a civil engineering structure. Can be used effectively for reinforcement.

  As a method for reinforcing a structure, in recent years, a bonding method has been developed in which a continuous fiber reinforced sheet is attached to or wound around the surface of an existing or newly installed structure.

  As described in Patent Document 1, the present inventors have arranged a plurality of continuous fiber-reinforced plastic wires that are impregnated with a matrix resin in a reinforcing fiber and cured, and are arranged in a slender shape in the longitudinal direction. A fiber reinforced sheet fixed with fixing fiber material was proposed.

  In addition, in Patent Document 1, when the fiber reinforced sheet 1 is manufactured, a mesh-like support sheet 3 made of weft and warp 4 is used as a fixing fiber material as shown in FIG. Alternatively, as shown in FIG. 7 (b), the fixing fiber material 3 is affixed to one side or both sides of the plurality of fiber reinforced plastic wires using an adhesive tape or an adhesive tape 3. It is proposed to fix it.

JP 2004-197325 A

  However, as a result of the research experiments by the present inventors, it has been found that the method for producing a fiber reinforced sheet using the fixing fiber material 3 as described above has the following problems.

  That is, in the mesh-like support sheet 3 shown in FIG. 7A, as shown in FIG. 8A, the yarn 4 obtained by combining a plurality of yarns Fo made of glass fibers is uniaxial, biaxial, or 3 The yarn 4 is formed so as to be oriented along the axis. As shown in FIG. 8A, the surface is impregnated with a low melting point type thermoplastic resin Rf in advance. Such a mesh-like support sheet 3 is pressed against a plurality of fiber-reinforced plastic wires 2 arranged in a slender shape and heated. As a result, the mesh-like support sheet 3 is welded to the fiber reinforced plastic wire 2 with the melted resin Rf on the surface of the yarn 4.

  Therefore, as shown in FIG. 8B, the fixing fiber material 4 is merely bonded to the fiber reinforced plastic wire 2 with point contact, that is, with a small amount of resin in the contact portion region. In addition, the mesh-like support sheet 1 is easily peeled off from the fiber reinforced plastic wire 2, and there is a problem that a plurality of fiber reinforced plastic wires arranged in a sled shape at the time of handling the fiber reinforced sheet during transportation, pasting work, etc. there were.

  There was a similar problem when the adhesive tape or adhesive tape 3 shown in FIG.

  Accordingly, an object of the present invention is to provide a fiber reinforced sheet and a method for manufacturing the same, in which a plurality of fiber reinforced plastic wires arranged in a slender shape do not cause a problem such as a balack even during handling such as transportation and pasting work. It is to be.

  Another object of the present invention is to provide a flat fiber-reinforced sheet and a method for producing the same.

The above object is achieved by the fiber reinforced sheet and the manufacturing method thereof according to the present invention. In summary, according to the first aspect of the present invention, a plurality of fiber reinforced plastic wires arranged in parallel are aligned in the longitudinal direction, and the plurality of fiber reinforced plastic wires are sheeted with a wire fixing material. In the manufacturing method of the fiber reinforced sheet held in a shape,
The wire rod fixing material is a thermoplastic resin-coated yarn having a core material using continuous fibers and a thermoplastic resin layer coated around the core material,
When the transverse area of the thermoplastic resin-coated yarn is S1, and the transverse area of the core material is S2, the fiber ratio (S2 / S1) × 100 is 2 to 30%,
A method for producing a fiber-reinforced sheet is provided, wherein the thermoplastic resin-coated yarn is bonded to the plurality of fiber-reinforced plastic wires by heating and pressurizing the fiber-reinforced plastic wires.

  According to one embodiment of the present invention, the core material of the thermoplastic resin-coated yarn is glass fiber, polyester fiber, cotton yarn, aramid fiber, basalt fiber, or nylon fiber.

  According to another embodiment of the present invention, the core material is a yarn made of glass fiber having a thickness of 40 to 800 tex or a yarn made of polyester fiber having a thickness of 20 to 400 tex.

  According to another embodiment of the present invention, the thermoplastic resin is a polyamide resin, EVA resin, polyester resin, PE resin, PP resin, vinyl chloride resin or ABS resin.

  According to another embodiment of the present invention, the outer diameter of the thermoplastic resin-coated yarn is 0.7 to 1.8 mm.

  According to another embodiment of the present invention, the wire fixing material is disposed in a direction orthogonal to a longitudinal direction of the plurality of fiber reinforced plastic wires, and the wire fixing material is the plurality of fiber reinforced materials. It arrange | positions at predetermined intervals in the longitudinal direction of a plastic wire.

  According to another embodiment of the present invention, the wire fixing material is oriented in an inclined manner with respect to the longitudinal direction of the plurality of fiber reinforced plastic wires, and is arranged in a zigzag shape.

  According to another embodiment of the present invention, the wire fixing material is provided on one side or both sides of a wire sheet formed of the plurality of fiber reinforced plastic wires.

  According to another embodiment of the present invention, in the thermoplastic resin-coated yarn, at least one of the core material or the thermoplastic resin layer is colored.

According to another embodiment of the present invention, the fiber-reinforced plastic wire is impregnated with a matrix resin in a reinforcing fiber,
The reinforcing fibers include carbon fiber; glass fiber: boron fiber; basalt fiber; organic fiber such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, polyester, etc. Used in hybrid,
The matrix resin is a thermosetting resin such as a room temperature curable or thermosetting epoxy resin, vinyl ester resin, urethane acrylate resin, MMA resin, unsaturated polyester resin or phenol resin, or polyamide resin, polyester resin, A thermoplastic resin such as polyurethane resin, polyethylene resin, polypropylene resin, ionomer resin, polyvinyl acetate resin, polystyrene resin, ABS resin, methacrylic resin, polyvinyl chloride resin, polyvinyl alcohol resin, thermoplastic elastomer resin or polyvinyl butyral resin. is there.

  According to another embodiment of the present invention, the fiber reinforced plastic wire has a circular cross-sectional shape having a diameter of 0.5 to 5 mm, or a width of 1 to 20 mm and a thickness of 0.1 to 10 mm. This is a rectangular cross-sectional shape.

  According to another embodiment of the present invention, the fiber reinforced plastic wires are separated from each other by 0.1 to 3.0 mm.

According to another aspect of the present invention, a plurality of fiber reinforced plastic wires arranged in parallel are aligned in the longitudinal direction, and the plurality of fiber reinforced plastic wires are held in a sheet shape by a wire fixing material. A sheet,
A fiber reinforced sheet produced by any one of the above production methods is provided.

  According to the fiber reinforced sheet of the present invention, there is no problem that the plurality of fiber reinforced plastic wires arranged in a slender shape are loosened even during handling such as transportation and pasting. The fiber reinforced sheet of the present invention is flat.

It is a perspective view which shows one Example of the fiber reinforced sheet | seat of this invention. It is a perspective view which shows the other Example of the fiber reinforced sheet | seat of this invention. It is a perspective view which shows the other Example of the fiber reinforced sheet | seat of this invention. It is sectional drawing of the fiber reinforced plastic wire which comprises the fiber reinforced sheet | seat of this invention. Fig.5 (a) is a cross-sectional block diagram of one Example of a wire fixing material, FIG.5 (b), (c) is a figure explaining the adhesion | attachment aspect to the wire sheet by a wire fixing material. It is a figure explaining one Example of the manufacturing apparatus for manufacturing the fiber reinforced sheet | seat of this invention, Fig.6 (a) is a front view, FIG.6 (b) is a top view. FIGS. 7A and 7B are perspective views showing an example of a conventional fiber reinforced sheet. FIG. 8A is a cross-sectional configuration diagram of an example of a conventional wire fixing material, and FIG. 8B is a diagram illustrating an adhesion mode of the conventional wire fixing material to a wire sheet.

  Hereinafter, the fiber reinforced sheet and the manufacturing method thereof according to the present invention will be described in more detail with reference to the drawings.

Example 1
(Fiber reinforced sheet)
1 to 4 show an embodiment of a fiber reinforced sheet 1 used in a method for reinforcing a structure according to the present invention. The fiber reinforced sheet 1 includes a plurality of continuous fiber reinforced plastic wires 2 arranged in parallel in the longitudinal direction and arranged in a so-called “sled” shape, and the wires 2 are fixed to each other by the wire fixing material 3. The feature of the present invention resides in the wire rod fixing material 3 to be used. The wire fixing material 3 will be described later.

  The fiber reinforced plastic wire 2 has an elongated shape (small diameter) in which a matrix resin R is impregnated with a plurality of continuous reinforcing fibers f oriented in one direction and cured, and has elasticity. Accordingly, the fiber reinforced sheet 1 in which the elastic fiber reinforced plastic wire 2 is formed in a sled shape, that is, a sheet shape in which the wires 2 are arranged close to and away from each other, has elasticity in its longitudinal direction. Yes. Therefore, for example, the fiber reinforced sheet 1 can be carried in a state of being wound at a predetermined radius during conveyance, and is extremely portable. In addition, since the fiber reinforced sheet 1 is composed of the fiber reinforced plastic wire 2, there is a concern that the orientation of the reinforcing fibers is disturbed or the yarn breakage occurs during conveyance as in a conventional unimpregnated reinforced fiber sheet. There is no.

  More specifically, the thin fiber reinforced plastic wire 2 has a substantially circular cross-sectional shape (FIG. 4A) having a diameter (d) of 0.5 to 5 mm, or a width (w) of 1 to 20 mm. , And a substantially rectangular cross-sectional shape (FIG. 4B) having a thickness (t) of 0.1 to 10 mm. Of course, other various cross-sectional shapes can be used as necessary. Moreover, in order to improve the adhesive force at the time of use, the fiber reinforced plastic wire 2 is preferably roughened by roughening the surface using shot blasting, a gold brush, or the like.

  As described above, in the fiber reinforced sheet 1 that is aligned and slid in one direction, the wires 2 are close to and separated from each other by a gap (g) = 0.1 to 3.0 mm to the wire fixing material 3. Fixed. In addition, the length (L) and width (W) of the fiber reinforced sheet 1 formed in this way are appropriately determined according to the size and shape of the structure to be reinforced, Generally, the total width (W) is 10 to 3000 mm. Moreover, although the length (L) can manufacture a strip-shaped thing about 1-5 m, or a thing 100 m or more, it cuts and uses it suitably at the time of use.

  It is also possible to manufacture the fiber-reinforced sheet 1 with a length (L) of about 1 to 5 m and a width W of about 1 to 10 m. In this case, the fiber reinforced plastic wire 2 can be wound in a direction perpendicular to the fiber reinforced plastic wire 2 in a stretched state, and can be wound and conveyed.

  As the reinforcing fiber f, carbon fiber; glass fiber: boron fiber; basalt fiber; organic fiber such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, and polyester; And can be used in a hybrid.

  The matrix resin R impregnated in the fiber reinforced plastic wire 2 is a thermosetting resin such as a room temperature curing type or thermosetting type epoxy resin, vinyl ester resin, urethane acrylate resin, MMA resin, unsaturated polyester resin or phenol resin. Or polyamide resin, polyester resin, polyurethane resin, polyethylene resin, polypropylene resin, ionomer resin, polyvinyl acetate resin, polystyrene resin, ABS resin, methacryl resin, polyvinyl chloride resin, polyvinyl alcohol resin, thermoplastic elastomer resin or A thermoplastic resin such as polyvinyl butyral resin can be suitably used. The resin impregnation amount is 30 to 70% by weight, preferably 40 to 60% by weight.

  Each wire 2 is fixed by a wire fixing material 3. That is, in this embodiment, as shown in FIG. 1, the wire fixing material 3 to be a weft is a wire made of a sheet composed of a plurality of wires 2 arranged in a unidirectional manner, that is, continuous. The wire sheet is placed at a predetermined interval (P) perpendicular to the wire 2 and heated and pressed.

  The driving interval (P) of the weft yarn 3 is not particularly limited, but is usually selected in the range of 10 to 100 mm in consideration of the handleability of the produced fiber reinforced sheet 1.

  The fixing method of each wire 2 by the wire fixing material 3 is not limited to the form of FIG. 1, and may be the form shown in FIGS.

  That is, as shown in FIG. 2, the wire fixing material 3 may be arranged in a zigzag shape so as to be inclined with respect to the longitudinal direction of the plurality of fiber reinforced plastic wire materials 2. Alternatively, as shown in FIG. 3, the zigzag arrangement shown in FIG. 2 may be arranged symmetrically with respect to the longitudinal direction of the fiber reinforced plastic wire 2. The adjacent peak interval P of the wire fixing members 3 arranged in a zigzag shape is not particularly limited, but is usually selected within a range of 10 to 100 mm as in the embodiment of FIG.

  1 to 3, the wire fixing material 3 has been described as being provided on one side of a wire sheet formed of a plurality of fiber-reinforced plastic wires, but may be provided on both sides.

(Wire rod fixing material)
Next, the wire fixing material 3 that constitutes the weft in this embodiment, which is a feature of the present invention, will be described.

  According to the present embodiment, as shown in FIG. 5A, the wire fixing material 3 has the resin layer Rf formed around the yarn F as the core material.

  That is, the wire fixing material 3 is a so-called thermoplastic resin-coated yarn in which a thermoplastic resin layer (resin material) Rf is formed around the yarn F.

  The yarn F as the core material is preferably a continuous fiber that is thin, resistant to tension, and heat resistant. For example, glass fiber, polyester fiber, cotton yarn, aramid fiber, basalt fiber, nylon fiber, or the like. For example, the yarn F is formed by combining a plurality of yarns Fo obtained by bundling a plurality of glass fibers or polyester fibers, and three yarns Fo in this embodiment.

  In particular, colored fibers can be used for polyester fibers, and the performance of the fiber reinforced sheet 1 as a product can be visually distinguished by coloring the wire fixing material 3, which improves convenience.

  The resin of the resin layer Rf is a thermoplastic resin, and a polyamide (nylon) resin is preferably used. It is particularly preferable when an epoxy resin is used as the impregnation resin for the fiber reinforced plastic wire 2. As the thermoplastic resin, an EVA resin, a polyester resin, a PE resin, a PP resin, a vinyl chloride resin, an ABS resin, or the like can be used in addition to the polyamide resin.

  Here, the configuration of the thermoplastic resin-coated yarn constituting the wire rod fixing material 3 suitably used in the present embodiment will be considered.

  According to the experiment results of the present inventors, when the cross-sectional area of the thermoplastic resin-coated yarn constituting the wire fixing material 3 is S1, and the cross-sectional area of the core material constituted by the yarn F is S2, the cross-sectional area It was found that the fiber ratio 100 × VF (%) obtained from the ratio VF = S2 / S1 is preferably 2 to 30%. Therefore, the resin ratio in the thermoplastic resin-coated yarn 3 is (100-100 × VF)%, that is, 98 to 70%.

  Further, the diameter df of the wire fixing material 3, that is, the thermoplastic resin-coated yarn, is set to 0.7 to 1.8 mm from the efficiency of heat fusion of the wire fixing material 3 to the wire 2 and the strength at the time of fixing. It is good. If the wire diameter exceeds 1.8 mm, the amount of resin around the yarn F becomes too large, and it is required to increase the heating temperature, which is not preferable from the viewpoint of production efficiency. On the other hand, if the thickness is less than 0.7 mm, a problem arises in terms of fixing strength to the wire 2 as the wire fixing material 3. Preferably, it is 1-1.2 mm.

The present inventors set the diameter df of the thermoplastic resin-coated yarn 3 to 1 to 1.2 mm, change the ratio of the yarn F and the resin material (resin layer Rf), and the characteristics and use of the wire fixing material. Ease was evaluated. The results are shown in Table 1.

  In Table 1 above, the fiber ratio is defined as S1 as the cross-sectional area of the thermoplastic resin-coated yarn constituting the wire fixing material 3 and S2 as the cross-sectional area of the core material constituted by the yarn F as described above. Then, the cross-sectional area ratio VF × 100 = (S2 / S1) × 100 (%). The remainder, that is, (100-fiber ratio) is the resin ratio (%).

  Experiment 1 is a case where the yarn F is not used, and when the resin is melted, the resin connected in a fibrous form is melted and cut. Use as a wire fixing material was not possible.

  The thermoplastic resin-coated yarn 3 used in Experiments 2 to 5 had a fiber ratio of 2 to 30%, and the characteristics as a wire rod fixing material and ease of use were good. In particular, the thermoplastic resin-coated yarn 3 used in Experiments 3 and 4 had a fiber ratio of 5 to 10%, and was excellent in characteristics and ease of use as a wire fixing material.

  The thermoplastic resin-coated yarn 3 used in Experiment 6 has a fiber ratio of 50% (resin ratio 50%), the resin ratio is clearly small, the resin flowability is poor, and the adhesive performance is poor. .

  Therefore, specifically, the yarn F is preferably 40 to 800 tex (g / km) in the case of glass fiber, or 20 to 400 tex (g / km) in the case of organic fiber such as polyester fiber. The reason is that fiber strength that is not cut is necessary, and that it is desired to finish the sheet as thin as possible when the weft is fused in a sheet form.

  According to the present embodiment, the wire fixing material 3 uses, as the yarn F, three 70 tex yarns Fo made of polyester fibers, twisted and combined (210 tex), The resin layer Rf was formed so that the diameter df was 1.2 to 1.0 mm. In this case, the fiber ratio is 15-22%.

  As the resin material for forming the resin layer Rf, a thermoplastic resin is used, and it is required to have the following characteristics.

That is, as a resin material that can be used in this embodiment,
(1) After fusing to a fiber reinforced sheet, it immediately solidifies by cooling.
(2) It is difficult to adhere to the cooling roller during the production of the fiber reinforced sheet.
(3) Good adhesion after fusing.
(4) Easy to use with a low melting point.
(5) Even at low temperatures, it becomes brittle and does not crack or peel off.
(6) When producing the wire fixing material, no blocking occurs during winding.
(7) The resin can be colored by mixing color pellets. That is, a colored resin can be used, and the performance of the fiber reinforced sheet 1 as a product can be visually distinguished by the color of the wire fixing material, which improves convenience.

  A polyamide (nylon) resin is preferably used as the resin material for forming the resin layer Rf that satisfies the above requirements.

  As shown in FIGS. 1 to 3 and FIG. 5 (b), the wire fixing material 3 produced as described above is arranged in a continuous manner in a plurality of continuous fiber reinforced plastic wire materials 2. The wire rods 2 were fixed on the wire rod fixing material 3 to each other by being placed on the wire sheet formed in this manner and heated and pressurized.

  As will be understood with reference to FIGS. 5B and 5C, as described above, the wire fixing material 3 to be the thermoplastic resin-coated yarn is disposed on the plurality of fiber reinforced plastic wires 2, Next, heat fusion is performed while heating and pressing.

  That is, the resin layer Rf of the wire rod fixing material 3 is melted by being heated, and the resin layer Rf is melted by pressing the wire rod fixing material 3 toward the plurality of fiber reinforced plastic wire rods 2. The made resin material flows between the fiber reinforced plastic wires 2, and the resin material adheres to the surface of the wire 2. Thereafter, by cooling, the resin is immediately cooled, and the core material thread F of the wire fixing material 3 is bonded to the fiber reinforced plastic wire 2 by the resin material. According to the present embodiment, the wire fixing material 3 after fusion is bonded to each wire 2 by a larger amount of resin as compared with the conventional example shown in FIG. 7, and the adhesiveness is remarkably improved. Moreover, the wire fixing material 3 is pressed toward the fiber reinforced plastic wire 2 so that the thickness on the surface of the fiber reinforced plastic wire 2 is minimized. The thickness is equal to the diameter, and the flatness of the fiber reinforced sheet 1 as a product is maintained.

  Moreover, the fiber reinforced sheet 1 of the present embodiment is flexible and has a feature that the plurality of fiber reinforced plastic wires 2 are not displaced in the longitudinal direction and are difficult to extend in the width direction.

  Moreover, in the said Example, although the wire fixing material 3 demonstrated as what was provided in the one side of the multiple wire 2 arranged in the form of a sheet form, ie, a wire sheet, of course, it arrange | positions on both surfaces. It is also possible to do.

(Fiber-reinforced sheet manufacturing method)
FIGS. 6A and 6B show an embodiment of a manufacturing apparatus for manufacturing the reinforcing fiber sheet 1 shown in FIG.

  In this embodiment, the manufacturing apparatus 100 is a belt conveyance device in which a conveyance belt 101 is stretched around rollers 102 and 103 and rotates in the direction of an arrow. Locking pins 104 are attached to the conveyor belt 101 at equal intervals in the vicinity of the peripheral edges on both sides in the direction orthogonal to the moving direction of the conveyor belt 101 (that is, the width direction of the belt 101). . Above the belt conveyance device 100, there are a traverse device 105, a heating device 106, a cooling roller 107, and an edge cutter device 108 in order from the upstream side to the downstream side adjacent to the upper running surface of the conveyance belt 101. Has been placed.

  From the inlet side of the belt conveying apparatus 100, in this embodiment, from the left side of FIG. 6, a plurality of continuous fiber reinforced plastic wires 2 are fed onto the conveying belt 101 so as to be separated from each other by a predetermined gap g in the width direction. Be paid. Accordingly, the fiber reinforced plastic wire 2 disposed on the conveyor belt 101 is a wire sheet that is aligned in a slender shape in the longitudinal direction.

  The traverse device 105 reciprocates in the width direction of the transport belt 101 and uses a locking pin 104 attached to the peripheral edge on both sides of the transport belt 101 to make a wire rod on the wire sheet transported by the transport belt 101. The fixing material 3 is arranged.

  The orientation of the wire fixing material 3 with respect to the wire sheet can be arbitrarily adjusted by adjusting the moving speed of the conveyor belt 101, the traverse speed of the traverse device 105, the arrangement of the locking pins 104 at both peripheral edges of the conveyor belt 101, etc. Can be adjusted.

  The wire fixing material 3 is heated to a predetermined temperature, for example, 120 to 180 ° C. by the heating device 106, and the resin layer Rf is melted. Next, the wire fixing material 3 is pressed against the wire sheet by the cooling roller 107, and at the same time, the melted resin of the wire fixing material 3 is cooled. When the resin is cooled and solidified, the wire fixing material 3 is bonded to the wire sheet, and the continuous fiber reinforced sheet 1 is produced.

  Thereafter, the wire rod fixing material 3 protruding from both sides in the width direction of the fiber reinforced sheet 1 is cut off by the edge cutter 108. Moreover, the continuous fiber reinforced sheet 1 is cut | disconnected by the width direction by required length, or is wound up by the winding roller (not shown).

  As described above, the fiber reinforced sheet 1 produced in this example has the wire 2 fixed in the longitudinal direction and width because the wire fixing material 3 is firmly bonded to each wire 2 of the fiber reinforced sheet 1. There is no deviation in the direction. Further, since the wire fixing material 3 is pressed against the wire by the cooling roll in a state where the resin layer Rf around the core material F is melted, the thickness is minimized and the flatness of the fiber reinforced sheet 1 is maintained. .

1 Fiber Reinforced Sheet 2 Fiber Reinforced Plastic Wire 3 Thermoplastic Resin Coated Yarn (Wire Material Fixing Material)
Fo core material Rf resin layer

Claims (13)

In the method for producing a fiber reinforced sheet, a plurality of fiber reinforced plastic wires arranged in parallel are aligned in the longitudinal direction, and the plurality of fiber reinforced plastic wires are held in a sheet shape with a wire fixing material.
The wire rod fixing material is a thermoplastic resin-coated yarn having a core material using continuous fibers and a thermoplastic resin layer coated around the core material,
When the transverse area of the thermoplastic resin-coated yarn is S1, and the transverse area of the core material is S2, the fiber ratio (S2 / S1) × 100 is 2 to 30%,
A method for producing a fiber-reinforced sheet, wherein the thermoplastic resin-coated yarn is bonded to the plurality of fiber-reinforced plastic wires by heating and pressurizing the fiber-reinforced plastic wires.   2. The method for producing a fiber-reinforced sheet according to claim 1, wherein the core material of the thermoplastic resin-coated yarn is glass fiber, polyester fiber, cotton yarn, aramid fiber, basalt fiber, or nylon fiber.   2. The fiber-reinforced sheet according to claim 1, wherein the core material is a yarn made of glass fiber having a thickness of 40 to 800 tex or a yarn made of polyester fiber having a thickness of 20 to 400 tex. Production method.   The fiber-reinforced sheet according to any one of claims 1 to 3, wherein the thermoplastic resin is polyamide resin, EVA resin, polyester resin, PE resin, PP resin, vinyl chloride resin or ABS resin. Manufacturing method.   5. The method for producing a fiber-reinforced sheet according to claim 1, wherein an outer diameter of the thermoplastic resin-coated yarn is 0.7 to 1.8 mm.   The wire fixing material is arranged in a direction orthogonal to the longitudinal direction of the plurality of fiber reinforced plastic wires, and the wire fixing material is arranged at a predetermined interval in the longitudinal direction of the plurality of fiber reinforced plastic wires. The method for producing a fiber-reinforced sheet according to claim 1, wherein the fiber-reinforced sheet is produced.   The said wire rod fixing material is inclined and orientated with respect to the longitudinal direction of the said plurality of fiber reinforced plastic wires, and is arrange | positioned at zigzag shape. A method for producing a fiber reinforced sheet.   The fiber reinforced sheet according to any one of claims 1 to 7, wherein the wire fixing material is provided on one side or both sides of a wire sheet formed of the plurality of fiber reinforced plastic wires. Production method.   The method for producing a fiber-reinforced sheet according to any one of claims 1 to 8, wherein at least one of the core material or the thermoplastic resin layer of the thermoplastic resin-coated yarn is colored. . The fiber reinforced plastic wire is impregnated with a matrix resin in a reinforced fiber,
The reinforcing fibers include carbon fiber; glass fiber: boron fiber; basalt fiber; organic fiber such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, polyester, etc. Used in hybrid,
The matrix resin is a thermosetting resin such as a room temperature curable or thermosetting epoxy resin, vinyl ester resin, urethane acrylate resin, MMA resin, unsaturated polyester resin or phenol resin, or polyamide resin, polyester resin, A thermoplastic resin such as polyurethane resin, polyethylene resin, polypropylene resin, ionomer resin, polyvinyl acetate resin, polystyrene resin, ABS resin, methacrylic resin, polyvinyl chloride resin, polyvinyl alcohol resin, thermoplastic elastomer resin or polyvinyl butyral resin. is there,
The method for producing a fiber-reinforced sheet according to any one of claims 1 to 9.   The fiber-reinforced plastic wire has a circular cross-sectional shape having a diameter of 0.5 to 5 mm, or a rectangular cross-sectional shape having a width of 1 to 20 mm and a thickness of 0.1 to 10 mm. The manufacturing method of the fiber reinforced sheet in any one of Claims 1-10.   The method for producing a fiber-reinforced sheet according to any one of claims 1 to 11, wherein the fiber-reinforced plastic wires are separated from each other by 0.1 to 3.0 mm. A plurality of fiber reinforced plastic wires arranged in parallel in the longitudinal direction, a fiber reinforced sheet holding the plurality of fiber reinforced plastic wires in a sheet shape with a wire fixing material,
A fiber-reinforced sheet produced by the production method according to claim 1.

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