JP6642141B2 - Method and apparatus for manufacturing reinforced fiber fabric - Google Patents

Description

  The present invention relates to a method for producing a reinforcing fiber fabric and an apparatus for producing the same. More specifically, the present invention provides a method of manufacturing a woven fabric capable of simultaneously inserting two weft yarns having different finenesses, alternately arranging the weft yarns in the direction of the warp yarns, and preventing occurrence of a weft yarn holding error. It is. In particular, when one of the weft yarns contains a hot-melt fiber, when heat-treating the reinforcing fiber woven fabric, it suppresses the collapse of the structure of the reinforcing fiber woven fabric (bending of the yarn) and maintains the shape of the woven structure. The present invention relates to a method for producing a reinforced fiber woven fabric that can be subjected to an effective heat treatment (eye-stop treatment).

  Conventionally, reinforcing fibers such as carbon fibers have a high specific strength and a specific elastic modulus, so that they are used as fiber reinforced plastic (hereinafter, referred to as FRP) materials, such as sports and leisure goods, which have a large weight-reducing effect, aircraft applications, and general use. It is widely used for industrial purposes.

  There are various methods of molding such FRP, such as hand lay-up molding, autoclave molding, RTM molding, and the like. The molding method depends on the shape and number of molded products, required characteristics, product allowable price, etc. It is determined as appropriate.

  In these various molding methods, it is general that the reinforcing fibers are once in the form of an intermediate substrate during the production process of the FRP, and the reinforcing fibers in the form of a woven fabric are often used as the intermediate substrate. . However, such a reinforcing fiber woven fabric has a problem that the woven fabric is deformed or misaligned when the woven yarn is displaced when handling the woven fabric, and a problem that the woven yarn is easily unraveled when the woven fabric is cut.

  To cope with such a problem, the reinforcing fiber and the thermoplastic fiber are simultaneously woven and then heat-treated (heated) to soften or melt the thermoplastic fiber, and the crossing point between the warp and the weft is reinforced, thereby strengthening the reinforcing fiber. Proposals have been made to obtain a reinforced fiber woven fabric which has a function of preventing the warp or weft of fibers from unraveling and a function of stabilizing the shape, and has excellent handleability.

  For example, Patent Document 1 proposes a method in which a hot melt fiber is wound around a weft and inserted. In such a proposal, it is possible to insert and insert with a simple facility. Further, Patent Literature 2 proposes a method of arranging a hot-melt fiber in a central portion of a weft (Patent Literature 2). With this method, there is a possibility that the expected sighting effect can be obtained because the insertion position of the weft yarn is stabilized.

JP-A-63-152637 JP 2012-172281 A

  However, in the method described in Patent Document 1 described above, since the hot-melt fiber is wound around the weft, the insertion position is not stable, and the portion that is not treated as the portion that has been subjected to the rounding process after the rounding process. There is a problem that occurs.

  In addition, the method described in Patent Document 2 has a problem that it is difficult to stably grip and insert the weft and the hot-melt fiber having different fineness with a rapier and easily insert a hot-melt fiber. .

  That is, in the methods described in Patent Literature 1 and Patent Literature 2, since the woven structure is not sufficiently controlled, a woven fabric in which the collapse of the structure of the reinforcing fiber woven fabric (bending of the woven yarn) is completely suppressed can be obtained. Had not been. The reinforcing fiber woven fabric obtained by such a conventional technique has not only a high mechanical property but also a molded article excellent in surface smoothness when molded into FRP because the reinforcing fibers are not oriented straight. There was a problem that it was not possible.

  Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, to suppress the collapse of the structure of the reinforcing fiber woven fabric (bending of the yarn), and to perform a reinforcing method for inserting a hot-melt fiber effective for maintaining the form of the woven structure. An object of the present invention is to provide a method for producing a fiber fabric and an apparatus therefor.

  In order to achieve the above object, the present invention employs the following configuration.

  That is, the manufacturing method of the reinforcing fiber woven fabric of the present invention is as follows.

At least, a warp yarn is composed of reinforcing fibers, and a weft yarn is a method of manufacturing a reinforcing fiber woven fabric in which a reinforcing fiber woven fabric composed of two fibers having different fineness is woven by a rapier loom,
The rapier loom has two weft holding portions, and the weft is alternately inserted in the direction of the warp by simultaneously inserting the weft in one weft insertion while holding the two fibers in each holding portion. A method for producing a reinforced fiber woven fabric, characterized by weaving side by side.

  Further, an apparatus for producing a reinforcing fiber woven fabric of the present invention is as follows.

At least, a warp yarn is composed of reinforcing fibers, and a weft yarn is a reinforcing fiber woven fabric manufacturing apparatus for weaving a reinforcing fiber woven fabric composed of two fibers having different finenesses,
An apparatus for manufacturing a reinforced fiber fabric, characterized by having two weft thread gripping portions capable of simultaneously inserting a weft thread in a single weft insertion and weaving the weft thread so as to be alternately arranged in the warp direction.

  According to the present invention, a weft composed of two fibers having different finenesses is simultaneously inserted in one weft insertion, so that a weft composed of two fibers having different fineness alternates in the warp direction. Can be woven to line up. In particular, when the weft is a carbon fiber and a hot-melt fiber, since the weft and the hot-melt fiber are separately gripped and inserted by a rapier loom, no gripping error occurs, and the insertion of the carbon fiber and the hot-melt fiber Since the position is also stable, the staple fabric after melting the hot-melt fibers suppresses the collapse of the structure of the reinforcing fiber woven fabric (bending of the yarn), and the shape retention of the woven structure is stabilized.

  The reinforcing fiber woven fabric obtained by the production method of the present invention, because the reinforcing fibers are oriented straight, when formed into FRP, not only exhibit mechanical properties such as high strength and elastic modulus, but also excellent. It is possible to provide a reinforcing fiber woven fabric that can achieve appearance quality. Such effects are maximized in bidirectional fabrics.

It is an outline side view showing an example of an apparatus which manufactures a reinforced fiber textile concerning the present invention. It is an enlarged view of the apparatus (a rapier part) which manufactures the conventional reinforcing fiber fabric. It is an enlarged view of the apparatus (a rapier part) which manufactures the conventional reinforcing fiber fabric. FIG. 2 is an enlarged view of an apparatus (a rapier portion) for producing a reinforcing fiber fabric according to the present invention. 1 is a schematic plan view illustrating a reinforced fiber fabric manufactured according to Example 1 of the present invention. 1 is a schematic plan view showing a reinforcing fiber fabric manufactured according to Comparative Example 1 which is out of the scope of the present invention.

  The method for producing a reinforced fiber woven fabric of the present invention is a method for producing a reinforced fiber woven fabric in which at least a warp yarn is composed of reinforced fibers and a weft yarn is composed of two fibers having different finenesses with a rapier loom. In the rapier loom, there are two weft holding portions, and the weft is inserted by simultaneous insertion of the weft in one weft insertion while holding the two fibers with each holding portion. It is woven so that it is alternately arranged in the direction. Thereby, two fibers (weft) having different fineness can be inserted at the same time, and the arrangement position of the two fibers (weft) having different fineness can be stabilized. In particular, when carbon fiber and hot-melt fiber are used as two fibers (weft) having different fineness, the insertion position of the hot-melt fiber is constant, and the hot-melt fiber can be stably inserted, and the obtained reinforced fiber woven fabric Is heated to soften or hot-melt the hot-melt fibers contained in the weft yarn to wind up the reinforcing fiber woven fabric, thereby obtaining a reinforcing fiber woven fabric without misalignment.

  Hereinafter, a method and an apparatus for producing a reinforced fiber woven fabric of the present invention, in which at least a warp yarn is composed of reinforced fibers and a weft yarn is woven by a rapier loom, and a weft yarn is composed of two fibers having different fineness, Each step is divided into A) weaving step, (B) heating step, and (C) winding step, and each step will be described in detail with reference to FIG. In the case where the hot melt fiber is not used as the weft, the heating step (B) is unnecessary.

(A) Weaving Step In the weaving step, first, a warp yarn 2 (2a, 2b) formed of a plurality of reinforcing fibers and formed into a sheet drawn from a bobbin 1 passes through back rollers 3, 4, and then becomes a warp yarn. Are passed through the heald 5 (5a, 5b), and are opened / closed by the vertical movement. When the warp yarns 2a, 2b are opened, two fibers (weft yarns 7 (7a, 7b)) of different fineness unwound from the weft bobbins 6 (6a, 6b) by the rapier 9 into the shed are reduced to one. It is inserted at the same time in the horizontal insertion.

  Here, an enlarged view of the rapier 9 is shown in FIGS.

  FIG. 2 is a schematic view of a conventional rapier, and FIG. 6 shows a state in which two wefts are gripped by the rapier. With the rapier of FIG. 2, when two weft yarns were to be gripped at the same time, the gripping positions were not stable, and even if gripped, the insertion positions of both yarns were not stable. In addition, one of the two weft yarns is likely to cause a grip error, and this phenomenon has been particularly noticeable when the difference in fineness between the two weft yarns is large.

  In the manufacturing method or the manufacturing apparatus according to the present invention, the rapier loom has two weft holding portions. Specifically, by using a rapier loom having a rapier shown in FIG. 4, since the rapier has two weft holding portions, each holding portion holds two fibers (weft) while holding one fiber. Two wefts can be inserted at the same time in the weft insertion, and even if two fibers having different fineness are used as the wefts, they can be inserted at the same time, and the arrangement position of the two fibers is stabilized. Above all, the greater the difference in the fineness between the two weft yarns, the more likely it is for a grip error during simultaneous insertion to occur, so that the effect of using the rapier shown in FIG. 4 can be further exhibited.

  In the present invention, the weft is composed of two fibers having different finenesses. The two fibers of the weft yarn are not particularly limited as long as they have different finenesses. However, since the process of simultaneously inserting the weft yarns in a single weft insertion is stabilized, the two fibers of the weft yarns having different finenesses are formed. The fineness ratio is preferably 5 times or more, and more preferably 10 times or more. The upper limit of the fineness ratio of two fibers having different finenesses, which is the weft, is not particularly limited, but is practically preferably about 200 times or less.

  In addition, the fineness here means the fiber weight per unit length obtained by dividing the fiber weight by the length.

  Subsequently, the healds 5a and 5b are moved up and down again to be closed, and the fabric 9 is woven. In the reinforced fiber woven fabric 9 woven in this manner, at least the warp yarn 2 is composed of reinforcing fibers, the weft yarns 7a and 7b are composed of two fibers having different densities, and the weft yarns are alternately arranged in the warp direction. The arrangement is as follows.

  An object of the present invention is to provide a method for producing a reinforced fiber woven fabric that exhibits excellent mechanical properties, is excellent in handleability during molding processing, and can suppress tissue collapse (bending of a woven yarn). Therefore, in the present invention, a reinforcing fiber is used at least for the warp yarn. The reinforcing fibers applicable as the warp yarn are not particularly limited, but the reinforcing fibers suitable as the warp yarn include, for example, carbon fiber, glass fiber, and aramid fiber. As such a reinforcing fiber, a carbon fiber excellent in specific strength and specific elastic modulus is preferable, and among them, a polyacrylonitrile-based fiber having a fiber diameter of 5 to 10 μ, a tensile strength of 3 to 7 GPa, and a tensile elastic modulus of 200 to 500 GPa By using the multifilament, FRP exhibiting higher mechanical properties can be obtained.

  The total fineness of the reinforcing fibers used as warp yarns is preferably a thick yarn in the range of 100 to 3,000 tex. It is preferable to use a reinforcing fiber having a total fineness in the above range as the warp yarn, because when the hot melt fiber is used as the weft, the effect of the present invention, which is manifested by eye-opening by the hot melt fiber, can be sufficiently exhibited. In addition, when the reinforcing fibers are carbon fibers, generally, the higher the fineness, the lower the manufacturing cost, and thus there is an advantage that a low-cost woven fabric substrate can be provided.

  If the total fineness of the reinforcing fiber is less than 100 tex, the number of intersection points between the warp and the weft is increased, so that the woven fabric is stable, and it is not necessary to stop the woven fabric. And the significance of the present invention is diminished. On the other hand, if the total fineness of the reinforcing fiber exceeds 3,000 tex, a reinforcing fiber woven fabric having a uniform fiber dispersion may not be obtained unless the yarn width is evenly expanded, and the reinforcing fiber which exerts sufficient mechanical properties may be obtained. It may not be easy to obtain a fabric.

  As described above, in the present invention, the weft is composed of two fibers having different finenesses, and it is preferable that one of the fibers is a hot-melt fiber.

  Further, a more preferred embodiment of the reinforcing fiber woven fabric produced by the present invention is that at least the warp yarn is composed of carbon fiber, the weft yarn is composed of at least carbon fiber and hot melt fiber (fibrous staple yarn), and As long as the hot-melt fiber is bonded at the intersection of the warp and weft, the woven fabric will not be misaligned during the molding process. , And a composite material that is lightweight and has excellent mechanical properties can be obtained.

  The hot melt fiber suitable as the weft is not particularly limited as long as it is a fiber having a melting property. In addition, having the property of melting means that the melting point is observed when the fiber is heated. The hot-melt fiber is preferably a thermoplastic resin fiber because it can be easily processed into a fibrous shape. Examples of the thermoplastic resin include polyamide, polyester, polypropylene, polyphenylene sulfide, polyvinyl alcohol, and the like, and copolymer resins, polymer alloy resins, and polymer blend resins thereof. Among them, copolymer resins are preferable because they are softened and melted at a relatively low temperature, and particularly, copolymer polyamides having good adhesion to an epoxy resin which is frequently used as a matrix resin of a composite material are preferable.

  Whether or not a melting point is observed in the fiber is determined by measuring as follows. That is, it is measured in accordance with the measuring method of the melting point described in Section 8.19 of JIS L 1013: 2010 Test method for synthetic fiber filament yarn.

  Further, in the case of the hot melt fiber, a thermoplastic resin and a thermosetting resin can be used in combination. In this case, the two may be a single resin composition in which both are compatible, or may be a phase-separated resin composition in which they are not compatible, or may be used in combination as an independent resin. . In particular, in order to improve the mechanical properties of FRP (particularly, delamination / interlaminar shear strength when reinforced fiber fabrics are laminated), a thermoplastic resin having high toughness and a thermosetting resin having excellent heat melting property are required. It is a particularly preferred embodiment to use as a resin composition in which is compatible. In this case, a high toughness thermoplastic resin alone has a problem of heating temperature, and a thermosetting resin having excellent heat melting property alone has a problem of handling property, and it is difficult to apply. However, by making them compatible with each other, the above-mentioned problem can be solved and the advantages of both can be maximized.

  The thermoplastic resin or thermosetting resin contained in the hot-melt fiber is appropriately selected depending on the purpose, but is preferably a thermoplastic resin from the viewpoint of exhibiting an eye-opening effect. When the hot-melt fiber contains a thermoplastic resin, the melting point of the thermoplastic resin is preferably from 80 to 200C.

  When the melting point of the thermoplastic resin contained in the hot-melt fiber is less than 80 ° C. or the glass transition temperature is less than 50 ° C., the heating temperature required for weaving the fabric is low, and the workability is excellent, but the heat resistance of the composite material is low. Not only does it significantly decrease, but also dissolves when the raw materials are stored or when the woven fabric is transported. On the other hand, when the melting point of the thermoplastic resin contained in the hot-melt fiber exceeds 200 ° C. or the glass transition temperature exceeds 170 ° C., the heat resistance of the composite material is improved, but the heating temperature during weaving of the woven fabric is improved. Is too high, and the workability may be extremely reduced.

  In the present invention, the melting point or glass transition temperature is defined as the melting point or glass transition temperature measured by a DSC (differential scanning calorimeter) at a heating rate of 20 ° C./min after the object to be measured is in a completely dried state. Point.

  The structure of the woven fabric used in the present invention is not particularly limited, but plain weave, twill weave, satin weave, or non-crimped design in which at least the reinforcing fiber yarn is a warp (the reinforcing fiber yarn is oriented straight, and the warp and the auxiliary yarn are wefts. A cross-linked and integrated structure) is preferably used.

(B) Heating Step In the heating step, the woven reinforced fiber fabric 9 is heat-treated in a non-contact manner by radiation from the heating source 16 to obtain a thermoplastic resin and / or thermosetting resin contained in the hot-melt fiber. Softens or heat melts the resin.

  The heating source is preferably heated by radiation from infrared heaters such as far infrared rays, mid infrared rays, and near infrared rays. When such a heating source is used, the reinforcing fiber fabric 9 can be efficiently heated without contacting the reinforcing fiber fabric 9. Further, the equipment can be reduced in size and does not hinder weaving, and the heating source for the fabric can be cut off when the loom is stopped, thereby suppressing overheating.

(C) Winding Step In the winding step, the roll 17 is wound around the winding core 13 via the pulling roller 12 and the pulling guide roller 15. FIG. 1 shows an example in which a winding device of a loom is used. However, a winding device is provided behind the winding device separately from the loom to secure a space, and a heating device is provided between the winding device and the winding device. In this way, heating can be performed.

(Example 1)
As the warp yarn, a polyacrylonitrile (PAN) -based carbon fiber yarn (total fineness: 198 tex) having a tensile strength of 3,530 MPa, a tensile modulus of 230 GPa, and a number of filaments of 3,000 is used. Using carbon fiber and aramid fiber yarn (total fineness: 21.5 tex) and using the apparatus shown in FIG. 1, a bidirectional woven fabric A was produced by the following procedure.

  In the weaving process, first, after arranging a plurality of warp yarns 2 drawn from the bobbin 1 so as to have a density of 5 yarns / cm, each of the warp yarns 2 is passed through back rollers 3 and 4 into two healds 5a. , 5b. When the warp yarns 2a and 2b passed through the two healds 5a and 5b are opened, weft yarns 7 (7a and 7b) are driven into the shed so that the density becomes 5 yarns / cm with a rapier. Was done. After that, it was sent out toward the winding core 13 via a guide roller, and was wound around the winding core 13 in a winding step to obtain a scroll 17.

The obtained bidirectional woven fabric A is a woven fabric having a woven fabric weight of 209 g / m ² and a weft of the woven fabric. When a weft is inserted into the woven fabric, a rapier having two weft holding portions is used. The carbon fibers and the aramid fibers of the weft were alternately arranged, and no meandering (tissue collapse) of the weft was observed. FIG. 5 shows a schematic plan view of such a bidirectional woven fabric A.

(Example 2)
As the warp yarn, a polyacrylonitrile (PAN) -based carbon fiber yarn (total fineness: 198 tex) having a tensile strength of 3,530 MPa, a tensile modulus of 230 GPa, and a number of filaments of 3,000 is used. Using a hot melt fiber of a copolyamide fiber yarn having a melting point of 110 ° C. (total fineness: 33.5 tex) with a carbon fiber,
Using the apparatus shown in FIG. 1, a bidirectional woven fabric B was manufactured according to the following procedure.

  (A) In the weaving step, first, after arranging a plurality of warp yarns 2 drawn out from the bobbin 1 so that the density becomes 5 yarns / cm, two warp yarns 2 are passed through the back rollers 3 and 4. Healds 5a and 5b were passed alternately. When the warp yarns 2a and 2b passed through the two healds 5a and 5b were opened, the weft yarn 7 was driven into the shed with a rapier so that the density became 2.5 yarns / cm, and beating was performed. .

  (B) In the heating step, the woven fabric was heat-treated from the fabric surface in a non-contact manner using only a far-infrared heater as the heating source 10, and the hot melt fiber contained in the weft was melted by heat. Here, the heater temperature was adjusted so as to be 120 ° C. on the surface of the fabric. Then, it sent out toward the winding core 13.

  (C) In the winding step, the roll 17 was wound around the winding core 13.

The obtained bidirectional woven fabric B is a woven fabric having a woven fabric weight of 215 g / m ^{2 and a} flat structure. Since a rapier having two weft grasping portions at the time of weft insertion of the woven fabric was used, it was thermally fused with the weft carbon fiber. The fiber can be stably gripped and inserted, and the insertion position of the hot-melt fiber is stable, and the intersections of the warp and weft are adhered, so that the meandering (texture collapse) of the weft in the reinforced fiber woven fabric after winding is achieved. No observations were made.

(Example 3)
A bidirectional woven fabric C was produced in the same manner as in Example 1, except that a copolyamide fiber yarn having a total fineness of 5.6 tex was used.

The obtained bidirectional woven fabric C is a woven fabric having a woven fabric weight of 201 g / m ^{2 and a} flat texture. Since a rapier having two weft gripping portions at the time of inserting the weft of the woven fabric is used, it is thermally fused with the weft carbon fiber. The fiber can be stably gripped and inserted, and the insertion position of the hot-melt fiber is stable, and the intersections of the warp and weft are adhered. Therefore, weaving of the weft (texture collapse) is completely observed in the wound fabric. Was not done.

(Example 4)
As the warp yarn, a polyacrylonitrile (PAN) -based carbon fiber yarn (total fineness: 800 tex) having a tensile strength of 4,500 MPa, a tensile modulus of 230 GPa, and a number of filaments of 12,000 is used. Using carbon fiber and copolyamide fiber yarn having a melting point of 110 ° C. (total fineness: 5.6 tex), the density of the plurality of warp yarns 2 and the density of the weft yarns drawn from the bobbin 1 are reduced to 1.25 / cm A bidirectional woven fabric D was manufactured in the same manner as in Example 2 except that the woven fabrics were arranged as described above.

The obtained bidirectional woven fabric D was a woven fabric having a woven fabric weight of 201 g / m ^{2 and a} flat structure. Since a rapier having two weft gripping portions at the time of weft insertion of the woven fabric was used, it was thermally fused with the weft carbon fiber. The fiber can be stably gripped and inserted, and the insertion position of the hot-melt fiber is stable, and the intersections of the warp and weft are adhered. Therefore, weaving of the weft (texture collapse) is completely observed in the wound fabric. Was not done.

(Comparative Example 1)
In the apparatus shown in FIG. 1, a bidirectional woven fabric E was manufactured in the same manner as in Example 1 except that the weft holding portion was woven using a single rapier.

The obtained bidirectional woven fabric E is a woven fabric having a woven fabric weight of 209 g / m ^{2 and a} flat structure. The grip portion of the rapier is located at one position. When two wefts having different finenesses are to be simultaneously inserted, the aramid fiber is used. The gripping position was not stable, a gripping error of the aramid fiber occurred, and the woven fabric did not partially have the aramid fiber inserted. FIG. 6 shows a schematic plan view of such a unidirectional woven fabric E.

(Comparative Example 2)
In the apparatus shown in FIG. 1, a bidirectional woven fabric F was manufactured in the same manner as in Example 3 except that the weft holding portion was woven using a single rapier.

The obtained bidirectional woven fabric F is a woven fabric having a woven fabric weight of 201 g / m ^{2 and a} flat structure. In the same manner as in Comparative Example 1, misinsertion of the hot melt fiber occurs when weft yarn is inserted, and the hot melt fiber is partially inserted. It has not been woven. Table 1 shows the results of the above Examples and Comparative Examples.

  According to the method for producing a reinforcing fiber woven fabric of the present invention, two weft yarns having different finenesses are simultaneously inserted in one weft insertion, so that two fibers having different finenesses are alternately arranged in the warp direction. Can be woven. Especially when the weft is a carbon fiber and a hot-melt fiber, since the carbon fiber and the hot-melt fiber are separately gripped and inserted by the rapier, no gripping error occurs, and the insertion position of the carbon fiber and the hot-melt fiber Therefore, the reinforced fiber woven fabric obtained by melting the hot-melt fibers suppresses tissue collapse (bending of the woven yarn) and stably retains the form of the woven fabric.

  Since the reinforcing fiber woven fabric obtained by the production method of the present invention has straight fibers, when reinforced fiber is molded into FRP, it not only exhibits mechanical properties such as high strength and elastic modulus, but also has excellent properties. Appearance quality can be achieved. Such reinforced fiber woven fabric is suitably used as a reinforcing material for FRP used in repair and reinforcement of structures, transportation equipment (automobiles, ships, aircraft, bicycles, etc.), sporting goods, and other general industries such as FRP type. .

1: bobbin 2, 2a, 2b: warp
3, 4: Back rollers 5, 5a, 5b: Healds 6, 6a, 6b: Weft bobbins 7, 7a, 7b: Weft 8: Reed 9: Rapier 10: Fabrics 11, 14, 15: Take-off guide rollers 12: Take-up rollers 13: winding core 16: heating source 17: scrolls 21, 24: warp yarn (carbon fiber)
22, 25: weft (carbon fiber)
23, 26: Weft (hot melt fiber)

Claims (4)

At least, a warp yarn is composed of reinforcing fibers, and a weft yarn is a method of manufacturing a reinforcing fiber woven fabric in which a reinforcing fiber woven fabric composed of two fibers having different fineness is woven by a rapier loom,
The rapier loom has two weft holding portions, and the weft is alternately inserted in the direction of the warp by simultaneously inserting the weft in one weft insertion while holding the two fibers in each holding portion. A method for producing a reinforced fiber woven fabric, characterized by weaving side by side.   The method for producing a reinforced fiber woven fabric according to claim 1, wherein the fineness ratio of the two fibers having different finenesses is 5 times or more.   The method for producing a reinforcing fiber woven fabric according to claim 1 or 2, wherein the two fibers having different fineness are a carbon fiber and a hot-melt fiber. At least, a warp yarn is composed of reinforcing fibers, and a weft yarn is a reinforcing fiber woven fabric manufacturing apparatus for weaving a reinforcing fiber woven fabric composed of two fibers having different finenesses,
An apparatus for manufacturing a reinforced fiber fabric, characterized by having two weft thread gripping portions capable of simultaneously inserting a weft thread in a single weft insertion and weaving the weft thread so as to be alternately arranged in the warp direction.

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