JP2010106641A - Woven fiber reinforced sheet and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woven fiber reinforced sheet and a method of manufacturing the woven fiber reinforced sheet by a loom system that can manufacture a fiber reinforced sheet which is a continuous flat woven fabric with extremely high work efficiency. <P>SOLUTION: The method of manufacturing the woven fiber reinforced sheet comprises (a) arranging a plurality of continuous fiber reinforced plastic linear materials 2 as a warp in parallel with predetermined voids to one another, (b) weaving weft 3 into the plurality of fiber reinforced plastic linear materials 2 arranged in parallel to one another, at predetermined spaces along the longitudinal direction of the fiber reinforced plastic linear materials 2 to weave a sheet-like woven fabric, and (c) setting a width in a direction orthogonal to the longitudinal direction of the fiber reinforced plastic wire materials formed of the plurality of fiber reinforced plastic wire materials arranged in parallel to one another in the process (a) is set wider by 10-30% than the woven fiber reinforced sheet which is a product. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fiber reinforced sheet of a woven fabric having a predetermined width that is produced by arranging thin fiber reinforced plastic wires in a sheet shape, that is, a “woven fiber reinforced sheet” and a method for producing the same. It is about. The woven fiber reinforced sheet produced by the method of the present invention, that is, the product is, for example, a concrete structure or a steel structure that is a civil engineering structure (in the present specification, a concrete structure or a steel structure). It can be effectively used for adhering to and reinforcing the structure.

  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.

  However, the above-mentioned bonding method is only simple bonding, and the effect of reinforcing the ultimate strength is limited due to the early destruction of the structure due to peeling of the FRP (fiber reinforced plastic) reinforcing material. There is a limit to the suppression effect. In addition, the high performance of the FRP reinforcement is often not utilized effectively. In addition, it is impossible to recover from crack damage of existing structures or to reinforce dead loads.

  In order to improve such problems, a tension bonding method is being used in which a load is applied to a sheet-shaped reinforcing material and the sheet-shaped reinforcing material is tensioned, and the sheet-shaped reinforcing material is bonded to the structure surface in a tensioned state. The sheet-like reinforcing material used in this tension bonding method is currently a sheet in which fibers not impregnated with resin are aligned in one direction, a so-called reinforcing fiber sheet, or a flat plate of fiber reinforced plastic having a width of 50 mm or more. Is used.

  However, in a fiber reinforced sheet using fibers that are not impregnated with resin, reinforcing fibers are not always uniformly aligned in one direction due to problems in manufacturing or handling. For this reason, in order to introduce tension, partial thread breakage may occur when a tension is applied to the reinforcing fiber sheet to cause tension, and sufficient tension may not be introduced. That is, the reinforcing fiber sheet may not exhibit sufficient force necessary for tension. Usually, the tension is reduced by about 50% to 30% of the final breaking load.

  Further, when a fiber reinforced plastic flat plate is used, since the plate width is wide, there is a problem that when adhering, voids are mixed into the bonding surface and it is difficult to obtain a sufficient bonding force. In order to avoid the generation of voids, it is conceivable to make a hole in the fiber-reinforced plastic flat plate. However, in this case, the reinforcing fiber of the fiber-reinforced plastic flat plate is cut, which is not preferable.

  Therefore, as described in Patent Document 1, the inventors of the present invention have a fiber reinforced sheet in which a plurality of continuous fiber reinforced plastic wires that have been cured by impregnating a matrix resin into a reinforced fiber and are cured are slender in the longitudinal direction. A fiber reinforced sheet was proposed in which the wires were fixed to each other with a fixing fiber material.

Such a fiber reinforced sheet can solve the problem of thread breakage during tension, and can also avoid generation of voids during construction to obtain a sufficient adhesion force to the reinforced surface. Reinforcement of concrete structures based on the bonding method can be performed with extremely good workability.
JP 2004-197325 A

  As described in Patent Document 1, the above-mentioned fiber reinforced sheet is composed of a plurality of continuous fiber reinforced plastic wires that are impregnated with a matrix resin in a reinforced fiber and cured in a longitudinal manner, and then the wires are joined to each other. Although fixing with a fixing fiber material has been proposed, a more specific and more efficient manufacturing method has been desired.

  Thereafter, the inventors of the present application conducted further research experiments and found that a fiber reinforced sheet having a very good workability and a flat woven shape can be produced by a loom system. The present invention has been made on the basis of novel findings obtained as a result of many research experiments by the present inventors.

  An object of the present invention is to produce a continuous, flat woven fiber reinforced sheet, and a woven fiber reinforced sheet by a loom system capable of producing such a woven fiber reinforced sheet with extremely high workability. Is to provide a method.

The above object is achieved by the woven fiber reinforced sheet and the method for producing the same according to the present invention. In summary, the present invention provides a method for producing a fiber-reinforced sheet having a plurality of fiber-reinforced plastic wires aligned in the longitudinal direction.
(A) As warps, a plurality of continuous fiber reinforced plastic wires, arranged in parallel with a predetermined gap between each other,
(B) Weaving weft yarns at a predetermined interval along the longitudinal direction of the fiber reinforced plastic wire material for the plurality of fiber reinforced plastic wire materials arranged in parallel to each other, and weaving a sheet-like woven fabric,
(C) In the step (a), the width in the direction orthogonal to the longitudinal direction of the fiber reinforced plastic wire formed by the plurality of fiber reinforced plastic wires arranged in parallel to each other is a product. 10-30% wider than the width of a certain woven fiber reinforced sheet,
This is a method for producing a woven fiber reinforced sheet.

  According to one embodiment of the present invention, the weft is a hot-melt resin-coated fiber in which the surface of the core wire is coated with a thermoplastic resin having a melting point in the range of 50 ° C to 230 ° C.

  According to another embodiment of the present invention, the core of the weft is a fiber made of carbon fiber, glass fiber, cotton, or aramid fiber, polyester fiber, polyamide fiber, polyvinyl alcohol fiber or polyethylene terephthalate fiber. The thermoplastic resin is polyamide resin, polyester resin, polyurethane resin, polyethylene resin, polypropylene resin, ionomer resin, polyvinyl acetate resin, polystyrene resin, ABS resin, methacrylic resin, polyvinyl chloride resin, polyvinyl alcohol resin, heat It is a plastic elastomer resin or a polyvinyl butyral resin, and the coating amount of the thermoplastic resin is 10 to 1000% by weight of the core wire.

  According to another embodiment of the present invention, the outer diameter of the core wire of the weft is 0.01 to 2.0 times the average diameter of the fiber reinforced plastic wire.

  According to another embodiment of the present invention, the sheet-like woven fabric obtained in the step (b) is further heated and pressed to make it flat.

  According to another embodiment of the present invention, the wefts are woven at intervals of 1 mm to 250 mm along the longitudinal direction of the fiber reinforced plastic wire.

  According to another embodiment of the present invention, the wefts are ears disposed on both sides of the plurality of fiber reinforced plastic wires arranged in parallel to each other, located on the outermost side in the width direction perpendicular to the longitudinal direction. Retained in the thread.

  According to another embodiment of the present invention, the fabric structure of the warp and the weft is a plain weave, a twill weave, or a satin weave structure.

  According to another embodiment of the present invention, in the fiber-reinforced plastic wire, a reinforcing fiber is impregnated with a matrix resin, and the reinforcing fiber includes carbon fiber; glass fiber: boron fiber; aramid, PBO (polyparaphenylene benzbisoxazole). ), Organic fibers such as polyamide, polyarylate, polyester, etc. are used alone or in a mixture of a plurality of types, and the matrix resin is a room temperature curing type or thermosetting type epoxy resin, vinyl ester resin. Thermosetting resins such as urethane acrylate resins, MMA resins, unsaturated polyester resins or phenol resins, or polyamide resins, polyester resins, polyurethane resins, polyethylene resins, polypropylene resins, ionomer resins, polyvinyl acetate resins, polystyrene resins, ABS tree , Methacrylic resins, polyvinyl chloride resins, polyvinyl alcohol resins, thermoplastic resins such as a thermoplastic elastomer resin or polyvinyl butyral resin.

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

  According to another embodiment of the present invention, the fiber reinforced plastic wires in the woven fiber reinforced sheet as a product are separated from each other by 0.1 mm to 3.0 mm.

  According to another embodiment of the present invention, the product woven fiber reinforced sheet has a width of 10 mm to 3000 mm.

  According to the other aspect of this invention, the woven fiber reinforcement sheet | seat manufactured with the said manufacturing method is provided.

  According to the present invention, it is possible to produce a fiber reinforced sheet made of a continuous, flat woven fabric, that is, a woven fiber reinforced sheet, with extremely good workability.

  In addition, the woven fiber reinforced sheet produced is the flatness of the entire fiber reinforced sheet, the flatness of the warp yarns, the smoothness of the weft yarns, the flexibility (small winding properties), the shape stability, the width accuracy, the arrangement of the warp yarns and the weft yarns. Excellent in terms of accuracy.

  Hereinafter, the woven 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 and 2 show an embodiment of a woven fiber reinforced sheet 1 obtained by the present invention. The fiber reinforced sheet 1 is produced by arranging a plurality of continuous fiber reinforced plastic wire rods 2 as warp yarns, aligning them in the longitudinal direction and arranging them in parallel with each other, and weaving each wire rod 2 with a weft yarn 3 as a fixing fiber material ( Weaving).

  That is, the woven fiber reinforced sheet 1 as a product obtained by the present invention is a woven fabric woven with warp fiber reinforced plastic wire 2 and weft yarn 3. The woven structure may be a plain weave, twill weave, satin weave, or the like.

  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 is formed into a sheet shape by weaving such elastic fiber-reinforced plastic wires 2 in a slender shape, that is, the wires 2 are closely spaced in parallel to each other and are aligned in one direction. , It has elasticity in its longitudinal direction. 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.

  Further, since the fiber reinforced sheet 1 is composed of the fiber reinforced plastic wire 2, the orientation of the reinforced fibers is disturbed at the time of conveyance, as in a conventional unimpregnated reinforced fiber sheet, or when tension is introduced. There is no concern that thread breakage may occur due to disordered orientation of the reinforcing fibers.

  More specifically, the thin fiber reinforced plastic wire 2 has a substantially circular cross-sectional shape (Fig. 3 (a)) with 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. 3B) having a thickness (t) of 0.1 to 10 mm. Of course, other various cross-sectional shapes can be used as necessary.

That is, in the specification and claims of the present application, it is understood that “small diameter” is not limited to a circular cross-sectional shape of the wire, but includes cases of a rectangular shape or other shapes. I want to be. Usually, “small diameter” means that the cross-sectional area of the wire is about 0.1 to ²⁰ mm ² . If it is too thin, the reinforcing effect is small, and if it is too thick, it is difficult to ensure the strength of the lap joint of the fiber reinforced sheet.

  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 slender in one direction, each wire 2 is closely spaced from the gap (g) = 0.1 to 3.0 mm and woven weft 3 It is fixed with. Further, the length (L) and the width (W) of the woven fiber reinforced sheet 1 formed in this way are appropriately determined according to the size and shape of the structure to be reinforced, but there are problems in handling. Therefore, generally, the total width (W) is 10 to 3000 mm. Moreover, although a length (L) can manufacture a thing of 100 m or more, in use, it cuts and uses it suitably.

  As the reinforcing fiber f, carbon fiber; glass fiber; boron fiber; and organic fibers such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, polyester, etc. are used alone or in combination of plural kinds. And can be used in a hybrid.

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

  Further, as a method of fixing each wire 2 with a weft 3 which is a fixing fiber material, as shown in FIG. 1, it is in a sheet form composed of a plurality of wires 2 arranged in a sled shape in one direction. A method of weaving a wire rod, that is, a continuous wire rod sheet, at a constant interval (P) perpendicular to the wire rod is employed.

  The intervals between the wefts 3 are in the range of 1 to 250 mm in the case of equal intervals. If too close, the flexibility of the sheet is lost. If it opens too much, a problem occurs in the shape stability of the sheet, such as deformation at an angle. Usually, it is about 50 mm.

  As the weft 3, various hot melt resin-coated fibers can be used to fix the continuous wire 2. That is, the weft 3 is a hot melt resin-coated fiber having a surface coated with a thermoplastic resin (hot melt resin) having a melting point in the range of 50 to 230 ° C.

  As the core wire of the weft yarn 3, yarns made of carbon fiber, aramid fiber, glass fiber, cotton, polyester fiber, etc. can be suitably used. As hot melt resin, polyamide resin, polyester resin, polyurethane resin, etc. Can be used.

  The coating amount of the hot melt resin is 10 to 1000% by weight of the core wire. If it is too small, the fixing force is insufficient, and if it is too large, the flexibility of the sheet is lost.

Moreover, the outer diameter of the core wire of the weft 3 is preferably 0.01 to 2.0 times the average diameter d of the wire 2. If it is too thin, the fixing force will be insufficient, and if it is too thick, the wire spacing P will become large and the reinforcing effect will be insufficient. The average diameter d of the wire 2 is d = (4S / π) ^1/2 where S is the cross-sectional area of the wire. When the cross section of the wire 2 is circular, the outer diameter of the core wire is about 0.1 mm to 2.1 mm.

  Next, the manufacturing method of the fiber reinforced sheet | seat of the textile fabric based on this invention, ie, the woven fiber reinforced sheet | seat 1, is demonstrated.

(Production method of fiber reinforced sheet)
The fiber reinforced sheet can be produced (woven) by a fly shuttle loom or a shuttleless loom. In this example, a shuttleless loom was used.

  FIG. 4 shows a schematic configuration of the loom 100, but the detailed structure of the loom is well known to those skilled in the art, and a detailed description thereof will be omitted.

  In this embodiment, a plurality of fiber reinforced plastic wires 2 as warp yarns of a fiber reinforced sheet are continuously supplied to the loom 100 by 250 to 350 wires 2 in this embodiment. .

  In the loom 100, each wire 2 is passed through a hole of a hook 103 (103a, 103b) for moving the warp up and down, and then passed through a hook 104 which is a guide bar for determining the interval of the warp. . This state is shown in FIG.

  In addition, as shown by a one-dot chain line in FIG. 4, the delivery device 101 may include a back tension applying mechanism 102. By applying a back tension to the wire 2 by the back tension applying mechanism 102, the arrangement accuracy of the wires 2 can be controlled.

  Further, in FIG. 5 (a), ear threads fe and fe are arranged on the right side and the left side, respectively, along the side edges of the plurality of wires 2 arranged at predetermined intervals, that is, the wire sheet. The wire 2 (2-1, 2-2, 2-3, ... 2n) is continuously supplied to the loom at a predetermined speed.

  As the ear thread fe, for example, a plurality of yarns made of fibers such as polyester fiber, nylon fiber, vinylon fiber, cotton, etc., for example, ten or more yarns can be gathered and used together.

  In FIG. 5 (a), the aligned wire 2 is a first wire group fg1 composed of wires 2-1, 2-3, 2-5,. Are divided into a second wire group fg2 composed of wire rods 2-2, 2-4,..., 2n-1, and can be moved up and down by hooks 103a and 103b, respectively.

  As shown in FIG. 5B, with respect to the reference plane H, the first wire group fg1 is moved upward by the flange 103a, and the second wire group fg2 is moved downward by the flange 103b. A predetermined gap S is formed between the first wire group fg1 and the second wire group fg2.

  Next, as shown in FIG. 5 (c), the weft thread 3 passes through the right ear thread fe and passes between the first wire group fg1 and the second wire group fg2 which are defined as the gap S. It is inserted through the left ear thread fe. In this embodiment, the weft 3 does not use a shuttle, but adopts a method of flying on a jet of air.

  The weft yarn 3 passed between the first wire group fg1 and the second wire group fg2 and the both-side ear threads fe is entangled with the right and left ear threads fe to form ear portions Fe. The weft 3 is cut at an outer portion than the both ears Fe. In other words, the weft 3 is held by the ear threads fe located on both sides of the plurality of fiber reinforced plastic wires arranged in parallel to each other, located on the outermost side in the width direction perpendicular to the longitudinal direction.

  The steps shown in FIGS. 5A, 5B, and 5C are performed continuously.

  After the process of FIG. 5 (c) is completed and a predetermined time has elapsed, that is, only a predetermined distance (P) from the weft 3 knitted between the first wire group fg1 and the second wire group fg2. At the separated position, as shown in FIG. 5D, the first wire group fg1 is moved downward and the second wire group fg2 is moved upward with respect to the reference plane H by the flanges 103a and 103b. Moved.

  Next, as shown in FIG. 5 (e), the weft 3 passes through the right ear thread fe and passes between the first wire group fg1 and the second wire group fg2 which are set as the gap S. It is inserted through the left ear thread fe. The weft 3 is entangled with the right and left ear threads fe to form an ear part Fe, and the weft 3 is cut at the outer part from both ear parts Fe.

  Next, after the process of FIG. 5 (e) is completed and a predetermined time has elapsed, that is, a predetermined distance (from the weft 3 knitted between the first wire group fg1 and the second wire group fg2) ( At a position separated by P), as shown in FIG. 5 (b), the first wire group fg1 is directed upward and the second wire group fg2 with respect to the reference plane H by the flanges 103a and 103b. Is moved downward.

  Thereafter, by repeatedly performing the above-described FIGS. 5C to 5E, each wire 2 constituting the first and second wire groups fg1 and fg2 which are warp yarns and the weft yarn 3 alternately have a plain weave structure. The so-called plain weave reinforcing fiber sheet 1 is woven.

  The woven fiber reinforced sheet 1, which is a woven product, is wound up by a winding device 105 having a caterpillar device 106.

  Thereby, as shown in FIG.5 (f), a plain weave reinforcement fiber sheet becomes a flat sheet-like thing by narrowing the width | variety.

In addition, according to the present embodiment, as understood with reference to FIG. 4, a heating facility, for example, a remote device, is provided between the caterpillar device 106 and the basket 104, that is, in the vicinity of the downstream side of the basket 104. An infrared heater 105 is provided, and a cooling facility such as a cooling roll 106 is provided immediately thereafter, and the reinforcing fiber sheet is heated and pressurized at a temperature of 100 to 150 ° C. and a pressure of 0.5 to 3 kgf / cm ² . Thereby, the reinforced fiber sheet of the woven fabric produced by repeating the steps shown in FIGS. 5A to 5E can further increase the flatness while narrowing the sheet width from the width of the wide ridge 104, An extremely flat woven reinforcing fiber sheet, that is, a woven fiber reinforcing sheet 1 can be obtained.

  In particular, it is preferable to use an organic high-strength fiber such as an aramid yarn for the weft and melt the hot melt resin of the weft before pressing. Glass fibers and normal fibers with low strength may break during pressing. Moreover, the sheet | seat excellent in flatness can be obtained by the space | interval of adjacent wefts being 10-50 mm especially.

  Thus, the plain-woven reinforcing fiber sheet, which is a product woven in the present embodiment, is supplied with the length in the direction orthogonal to the longitudinal direction of the wire 2, that is, the sheet width W, to the ridge 104 of the loom. The width is reduced from the width W0 formed by the sheet-like wire made of the first and second wire groups fg1 and fg2. According to the results of the experimental study by the present inventors, in order for the plain weave reinforcing fiber sheet to have a flat sheet shape without undulations, the width W0 of the sheet-like wire rod in the collar portion 104 is more than the width W of the plain weave reinforcing fiber sheet. It has been found that it is extremely effective to set it larger by 10 to 30%. If it is too wide, the distance between the continuous fiber reinforcing materials will be too wide, and the reinforcing effect will be insufficient. If it is too narrow, the sheet will not be flat.

  In the above description, the wire as the warp and the weft are woven in a plain weave. However, the present invention is not limited to this, and a twill weave (oblique weave) or a satin weave may be used.

  As described above, according to the present invention, a flat woven fabric is obtained while the width is narrowed from the wide sheet-like wire at the position of the heel, and the tissue is fixed by various hot-melt resin-coated fibers. Moreover, the woven fiber reinforced sheet which is a product is excellent in handling property and structure | strength strength by adjusting the fiber arrangement | sequence using the hot melt resin coating fiber of predetermined thickness.

Production Example 1
In this production example, the fiber reinforced plastic wire 2 in the fiber reinforced sheet 1 uses PAN-based carbon fiber strands having an average diameter of 7 μm and a convergent number of 12,000 as the reinforcing fibers f, and impregnated with a room temperature curing type epoxy resin as the matrix resin R. And cured. The resin impregnation amount was 40% by weight, and the fiber-reinforced plastic wire 2 after curing had a circular cross section with a diameter d = 1.0 mm.

  The fiber-reinforced plastic wire 2 obtained in this way was supplied to the loom 100 after being drawn in one direction by a feeding device 101 with 180 pieces / width 360 mm (weight per unit 600 g). That is, the interval between the wire 2 in the collar portion 104 of the loom 100 was 2 mm.

  Further, polyester fiber was used as the ear thread fe.

  As the weft 3, a hot melt coated fiber (manufactured by Unitika Co., Ltd.) in which a core resin aramid fiber (1100d) was coated with a polyester resin was used. The coating amount of the hot melt resin was 60% by weight of the core wire.

  The interval P between the wefts 3 was 50 mm.

In Production Example 1, as shown in FIG. 4, a far infrared heater 107 and a cooling roll 106 are installed between the loom 100 and the caterpillar device 106, and the fabric is heated to 120 ° C. with the far infrared heater 107, and then The cooling roll 106 was pressurized at 2 kgf / cm ² .

  The woven fiber reinforced sheet 1 produced in this way had a width (W) of 300 mm and a gap (g) between the wires 2 of 0.3 to 0.4 mm.

  In addition, the overall flatness of the fiber reinforced sheet, the flatness of the warp yarns, the smoothness of the weft yarns, the flexibility (small winding), the shape stability, the width accuracy, and the warp / weft alignment accuracy were evaluated. there were. In particular, it was found that the flatness between the warp yarns and the smoothness of the weft yarns were particularly improved by performing heat treatment and cooling press using the far-infrared heater 107 and the cooling roll 106.

  As the weft, instead of the aramid fiber, a cotton yarn was used and a polyester-coated one was used. In this case as well, good results could be obtained.

It is a perspective view which shows one Example of the woven fiber reinforcement sheet | seat manufactured by this invention. It is the elements on larger scale of a woven fiber reinforcement sheet. It is sectional drawing of a fiber reinforced plastic wire. It is a perspective view which shows schematic structure of the loom for enforcing the manufacturing method of the fiber reinforced sheet which concerns on this invention. It is process drawing for demonstrating the manufacturing method of the woven fiber reinforcement sheet | seat which concerns on this invention.

Explanation of symbols

1 Fiber reinforced sheet 2 Fiber reinforced plastic wire (warp)
3 Fixing fiber material (weft)
DESCRIPTION OF SYMBOLS 100 Loom 101 Feeding device 102 Back tension mechanism 103 (103a, 103b) １０４ 104 筬 105 Winding device 106 Caterpillar device 107 Far-infrared heater (heating equipment)
108 Cooling roll (cooling equipment)

Claims (13)

In the method for producing a fiber reinforced sheet having a plurality of fiber reinforced plastic wires aligned in the longitudinal direction,
(A) As warps, a plurality of continuous fiber reinforced plastic wires, arranged in parallel with a predetermined gap between each other,
(B) Weaving weft yarns at a predetermined interval along the longitudinal direction of the fiber reinforced plastic wire material for the plurality of fiber reinforced plastic wire materials arranged in parallel to each other, and weaving a sheet-like woven fabric,
(C) In the step (a), the width in the direction orthogonal to the longitudinal direction of the fiber reinforced plastic wire formed by the plurality of fiber reinforced plastic wires arranged in parallel to each other is a product. 10-30% wider than the width of a certain woven fiber reinforced sheet,
A method for producing a woven fiber reinforced sheet characterized by the above.   2. The method for producing a woven fiber reinforced sheet according to claim 1, wherein the weft is a hot melt resin-coated fiber in which a surface of a core wire is coated with a thermoplastic resin having a melting point in a range of 50 to 230 ° C. 3. .   The core wire of the weft is a fiber made of carbon fiber, glass fiber, cotton, or aramid fiber, polyester fiber, polyamide fiber, polyvinyl alcohol fiber or polyethylene terephthalate fiber, and the thermoplastic resin is a polyamide resin, Polyester resin, 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, The method for producing a woven fiber reinforced sheet according to claim 2, wherein a coating amount of the thermoplastic resin is 10 to 1000% by weight of the core wire.   The method for producing a woven fiber reinforced sheet according to claim 3, wherein an outer diameter of the core wire of the weft is 0.01 to 2.0 times an average diameter of the fiber reinforced plastic wire.   The method for producing a woven fiber reinforced sheet according to any one of claims 2 to 4, wherein the sheet-like woven fabric obtained in the step (b) is further heated and pressed to make it flat.   The method for producing a woven fiber reinforced sheet according to any one of claims 1 to 5, wherein the weft yarn is woven at an interval of 1 to 250 mm along a longitudinal direction of the fiber reinforced plastic wire. .   The weft yarn is held by ear yarns arranged on both sides of the plurality of fiber reinforced plastic wires arranged in parallel to each other, located on the outermost side in the width direction perpendicular to the longitudinal direction. The method for producing a woven fiber reinforced sheet according to any one of claims 1 to 6.   The method for producing a woven fiber reinforced sheet according to any one of claims 1 to 7, wherein a woven fabric structure of the warp and the weft is a plain weave, a twill weave, or a satin weave structure. The fiber reinforced plastic wire is impregnated with a matrix resin in a reinforced fiber,
The reinforcing fiber is a carbon fiber; glass fiber: boron fiber; organic fiber such as aramid, PBO (polyparaphenylene benzbisoxazole), polyamide, polyarylate, polyester, etc. Used,
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 woven fiber reinforced sheet according to any one of claims 1 to 8.   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 method for producing a woven fiber reinforced sheet according to any one of claims 1 to 9.   The woven fabric according to any one of claims 1 to 10, wherein the fiber reinforced plastic wires in the woven fiber reinforced sheet as a product are separated from each other by 0.1 to 3.0 mm. A method for producing a fiber reinforced sheet.   The method for producing a woven fiber reinforced sheet according to any one of claims 1 to 11, wherein the woven fiber reinforced sheet as a product has a width of 10 to 3000 mm.   A woven fiber reinforced sheet produced by the method for producing a woven fiber reinforced sheet according to any one of claims 1 to 13.

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