JPH08290426A - Frtp molding material and frtp tubular molded object obtained using the same - Google Patents

Abstract

PURPOSE: To obtain an FRTP molding material adapted to the production of an inexpensive FRTP tubular molded object excellent in strength, good in the impregnation properties of a thermoplastic resin to a reinforcing fiber for obtaining the molded object, large in the degree of freedom of planning, good in handling properties, preventing the reinforcing fiber from becoming fluffy and having flexibility. CONSTITUTION: A ribbon-shaped FRTP molding material 1 is obtained by fusing both end parts 5, 5 of a laminate 4 wherein a ribbon-shaped reinforcing fiber tow 2 is held between matrix resin supplying thermoplastic resin films 3, 3 wider than the tow 2 along the longitudinal direction thereof. A plurality of the ribbon-shaped FRTP molding materials 1 are arranged so that the end parts 5, 5 in the longitudinal direction of the adjacent ribbon-shaped FRTP molding materials 1, 1 are superposed one upon another and the superposed parts of the ribbon-shaped FRTP molding materials 1... are respectively fused to obtain an FRTP tubular molded object composed of the wide FRTP molding materials wherein reinforcing fibers are arranged in one direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular molded body made of fiber reinforced thermoplastic resin (FRTP) such as a racket frame for tennis or badminton,
A FRTP molding material for obtaining such a FRTP tubular molding, and an F obtained by using the FRTP molding material
It relates to an RTP tubular molded body.

[0002]

2. Description of the Related Art Conventionally, racket frames and other FR
Examples of the FRTP molding material used in the production of the TP tubular molded product include a matrix fiber made of a thermoplastic resin such as polyamide or polycarbonate that is once spun into a matrix fiber, and a matrix fiber tow composed of the matrix fiber and a glass. A yarn with a round cross-section is formed by mixing and spinning a reinforcing fiber tow made of fiber, carbon fiber, etc., and using this yarn, a tubular sleeve for bag-weaving and the reinforcing fiber are melt-impregnated with a thermoplastic resin. Known are a completely impregnated tape, a partially impregnated tape obtained by impregnating a reinforcing fiber only with a thermoplastic resin in the vicinity of the outer periphery, and a unidirectional woven fabric obtained by interweaving a reinforcing fiber and a resin fiber.

[0003]

However, in the case of producing a FRTP tubular molded body using a conventional sleeve, a carbon fiber tow having a large tex number (for example, 12K) is inexpensive as a fiber tow for reinforcing the yarn. Since the carbon fiber tow) is used, the reinforcing fiber tow becomes thicker and a large void is generated at the intersection of the reinforcing fibers, and this void may remain in the FRTP tubular molded body as a void. , The problem remains in terms of strength. In addition, since the crossing portion of the reinforcing fibers is thick, it is difficult to uniformly impregnate the resin, and the resulting FRTP tubular molded body is apt to have wrinkles and resin accumulation, which causes a problem in appearance. It was

Further, when the conventional yarn is used, since the thickness of the yarn is large, the sleeve obtained is also thick and the weight per unit length becomes heavy, so that the racket is heavy. When manufacturing a FRTP tubular molded body such as a frame, which is required to be lightweight and strong, only three layers can be laminated, so that the degree of freedom in design is small and the strength is unsatisfactory. Furthermore, in the conventional yarn, when producing a sleeve by bag-weaving, the reinforcing fibers may be fluffed, and the reinforcing fibers may be broken, in which case, reinforcing fiber dust is generated, There was a problem that the strength of the obtained FRTP tubular molded product was reduced.

When the above-mentioned completely impregnated tape is used, since this completely impregnated tape is already FRTP, it is not flexible and it is difficult to fabricate a sleeve by bag-weaving, and the filament winding method is also used. As a result, it has been difficult to wind the FRTP tubular molded body around the core material. In the case of using the above-mentioned partially impregnated tape, it is relatively flexible, but since the cost is high, the resulting FRTP tubular molded body also has a high cost,
There is also a hard type partially impregnated tape, and when using such a hard type tape, it was difficult to fabricate a sleeve or to wind it around a core material like the above-mentioned completely impregnated tape. . When the unidirectional woven fabric is used, it is expensive and it is difficult to impregnate the reinforcing fibers with the resin, and the reinforcing fibers are fluffed during the weaving.

[0006] Therefore, an object of the present invention is to provide a FRTP tubular molded body which is excellent in strength and is inexpensive, and such an FRTP tubular molded body.
FRTP molding which has good impregnation of thermoplastic resin into reinforcing fiber to obtain tubular molded body, has a large degree of freedom in design, good handling property, and does not cause fluffing of reinforcing fiber and is flexible. The purpose is to provide materials.

[0007]

In the FRTP molding material according to claim 1 of the present invention, a laminated body in which reinforcing fibers are sandwiched between matrix resin supplying thermoplastic resin films is fused. It is characterized by In addition, claim 2
In the ribbon-shaped FRTP molding material described above, a ribbon-shaped reinforcing fiber tow or a ribbon-shaped yarn is sandwiched by a thermoplastic resin film for supplying a matrix resin wider than the toughness in a longitudinal direction of a laminate. It is characterized in that both ends thereof are fused together. Claim 3
The FRTP molding material according to claim 1 or 2.
The described FRTP molding material is characterized in that the laminate is an alternate laminate of reinforcing fibers and a matrix resin supplying thermoplastic resin film.

Further, in the wide FRTP molding material according to claim 4, the FRTP according to claim 1, 2 or 3
A plurality of molding materials are arranged so that the end portions of the adjacent FRTP molding materials along the longitudinal direction overlap each other, and the overlapping portions of these FRTP molding materials are fused to each other, and the arranging direction of the reinforcing fibers is arranged. Are arranged in one direction. Further, in the FRTP tubular molded body according to claim 5, the FRT according to claim 1, 2, 3 or 4.
It is obtained by using a P molding material.

[0009]

EXAMPLES In order to make the present invention easier to understand,
Examples will be described. The examples show one aspect of the present invention, and do not limit the present invention. It can be arbitrarily changed within the scope of the present invention. First, a first embodiment of the FRTP tubular molded body of the present invention will be described. FIG. 1 shows a ribbon-shaped FRT used in the first embodiment.
1 shows an example of a P molding material. This ribbon-shaped FRTP molding material 1 is a ribbon-shaped reinforcing fiber tow 2
Of the thermoplastic resin films 3 and 3 for supplying a matrix resin having a wider width than the above, and both ends 5 and 5 along the longitudinal direction of the laminated body 4 are fused and thin and flat. .

The above-mentioned ribbon-shaped reinforcing fiber tow 2 is a reinforcing fiber tow having a round cross section, for example, a tex number of 12K.
Of a thin and flat product obtained by opening the carbon fiber roving, the thickness of which is 1 mm or less, preferably 0.5 mm or less, and the width is 4 times or more, preferably 10 times or more of the thickness. Is. As the reinforcing fiber forming the ribbon-shaped reinforcing fiber tow 2 here, aramid fiber, glass fiber, carbon fiber or the like is used.

The thermoplastic resin film 3 has a thickness of 100 μm or less, preferably 50 μm or less, and a width when sandwiching the ribbon-shaped reinforcing fiber tow 2,
The reinforcing fiber tow 2 does not protrude from the both ends 5, 5 of the laminate 4, and the both ends 5, 5 of the laminate 4 can be fused to some extent. As the thermoplastic resin forming the thermoplastic resin film 3, polyamide, polycarbonate, polyphenylene oxide, polyetherimide, or the like is used. Moreover, it is preferable that a large number of holes (not shown) are formed in the thermoplastic resin film 3. The size of the hole is 100 μm to 1 mm in diameter.
The degree of distribution of the holes is 1 to 50 / c.
It is about m ² . When such a hole is formed in the thermoplastic resin film 3, when a FRTP tubular molded body is molded by an autoclave method or the like using a sleeve or the like formed by bag-weaving the ribbon-shaped FRTP molding material 1. At the time of evacuation, bubbles remaining in the ribbon-shaped reinforcing fiber tow 2 can be discharged to the outside of the ribbon-shaped FRTP molding material 1 through the above holes, and thus the obtained FRTP tubular molded body is obtained. It does not remain as a void.

The ribbon-shaped FRTP molding material 1 has a thickness of 1.0 mm or less, preferably 0.5 mm or less, and a width of 4 times or more, preferably 10 times or more of the thickness. The weight ratio of the ribbon-shaped reinforcing fiber tow 2 and the thermoplastic resin film 3 constituting the ribbon-shaped FRTP molding material 1 is not particularly limited, and the required reinforcement in the FRTP tubular molded body is required. It is determined according to the content (Vf) of the fiber for use. Further, the tex number of the ribbon-shaped reinforcing fiber tow 3 can be appropriately determined according to the Vf value.

FIG. 2 is a ribbon-shaped FRTP shown in FIG.
1 shows an example of a manufacturing apparatus preferably used for manufacturing the molding material 1. In the figure, reference numeral 11 is a first delivery roller 12a, 1 around which a ribbon-shaped reinforcing fiber tow 2 is wound.
2b is a pair of second delivery rollers on which the thermoplastic resin films 3 and 3 are respectively wound, 13 is a first guide roller,
14a and 14b are a pair of second guide rollers, and
Is a heat roll, 16 is a silicone rubber roll, and 17 is a take-up roller.

The following steps are used to manufacture the ribbon-shaped FRTP molding material 1 of FIG. 1 using the manufacturing apparatus shown in FIG. First, the ribbon-shaped reinforcing fiber tow 1 is delivered from the first delivery roller 11 to the first guide roller 13,
Further, it is sent out between the second guide rollers 14a and 14b. At the same time, the thermoplastic resin films 3 and 3 are transferred from the second delivery rollers 12a and 12b to the second guide rollers 14a and 14a.
It is sent out between 14b, and the upper and lower sides of the above-mentioned ribbon-shaped reinforcing fiber tow 1 are sandwiched by these thermoplastic resin films 3 and 3 to form a laminate 4. Then, the second guide rollers 14a, 1
4b, the laminate 4 is sent out between the heat roll 15 and the silicon rubber roll 16 and heated and pressed. Then, since there is no heat insulating fiber between the upper and lower thermoplastic resin films 3 and 3 located at both end portions 5 and 5 of the laminate 4,
The film in that portion is easily fused, and the ribbon-shaped reinforcing fiber tow 1 located in the intermediate portion 6 is not completely impregnated with the thermoplastic resin forming the thermoplastic resin films 3 and 3. The FRTP molding material 1 is obtained. Finally, the ribbon-shaped FRTP molding material 1 is cooled from between the heat roll 15 and the silicon rubber roll 16 to a cooling roller (not shown).
And then cooled to near room temperature, and then wound around the winding roller 17.

In this ribbon-shaped FRTP molding material 1, a thin ribbon-shaped reinforcing fiber tow 2 is sandwiched with thermoplastic resin films 3 and 3 for supplying a matrix resin wider than the ribbon-shaped reinforcing fiber tow 2. Therefore, this ribbon-shaped FR
When the FRTP tubular molded body is thermoformed using the TP molding material 1, the reinforcing fibers are well impregnated with the thermoplastic resin, and wrinkles and resin pools are less likely to occur, so that the FRTP tubular molding has an excellent appearance. It is possible to get a body. The ribbon-shaped FRTP molding material 1 is thin and flat, and the ribbon-shaped reinforcing fiber tow 1 located in the intermediate portion 6 of the laminated body 4 has a thermoplastic resin film. It is flexible because the thermoplastic resin forming parts 3 and 3 is not completely impregnated.
Since the thermoplastic resin film 3 is not easily peeled off because the No. 5 is fused and the reinforcing fiber tow 1 in the ribbon shape is surrounded by the thermoplastic resin film, the reinforcing fibers do not come apart. A sleeve, a woven fabric, and a prepreg for filament winding can be easily manufactured. Further, this ribbon-shaped FRTP molding material 1
Since the reinforcing fibers do not fluff when manufacturing a sleeve or the like by bag-weaving, the reinforcing fibers do not break, and thus it is possible to prevent the generation of reinforcing fiber dust. It is possible to prevent the strength of the FRTP tubular molded body from decreasing. Furthermore, this ribbon-shaped FRTP molding material 1 is obtained because the ribbon-shaped reinforcing fiber tow 2 is easily obtained from an inexpensive reinforcing fiber tow having a large tex number (for example, 12K carbon fiber tow). Is cheap.

FIG. 3 shows an example of the sleeve used in the first embodiment. The sleeve 20 has a cylindrical shape which is woven by using the ribbon-shaped FRTP molding material 1 shown in FIG. In such a sleeve 20, since the ribbon-shaped FRTP molding material 1 is thin and flat, it has a wide width and an occupied area increases. Therefore, a tow having a large tex number is used. Even if you reduce the number of shots and reduce the weight, it will not become a mess and it will be a thin sleeve with eyes. Therefore, since this sleeve has a lighter weight per unit length, it can be laminated in multiple layers as compared with the conventional one, and the reinforcing fibers can be arranged so that the resulting FRTP tubular molded body has the desired strength. The degree of freedom is improved.

FIG. 4 is a view for explaining an example of manufacturing the FRTP tubular molded body of the first embodiment by the hollow internal pressure molding method. In this manufacturing example, a case where the obtained FRTP tubular molded body is a racket frame will be described.
First, as shown in FIG. 4A, a plurality of lines (four lines in the drawing)
Of the sleeves 20 of ... are laminated concentrically to form a hollow laminate 2.
Set to 1. Next, as shown in FIG. 4B, the hollow laminated body 21 is put on the outer circumference of the silicone resin tube 22. Then, as shown in FIG. 4 (C), the hollow laminated body 21 together with the tube 22 is attached to the mold 24 for molding the racket frame.
Place it inside. At this time, the auxiliary member 25 is placed in the mold 24.
The prepreg of is also placed at the same time.

Then, the mold 24 is heated to a temperature equal to or higher than the melting point of the thermoplastic resin forming the thermoplastic resin film 3 to melt the thermoplastic resin and impregnate it into the ribbon-shaped reinforcing fiber tow 2. During this heating, air pressure G is applied to the inside of the tube 22 to press the hollow laminate 20 against the mold 24 from the inside. After that, the molded product is obtained by cooling while maintaining the air pressure, releasing the tube pressure and releasing from the mold. Finally, by pulling out the tube 22 from this molded product, a desired FRTP tubular molded product as shown in FIG. 4 (D) is obtained.

As described above, in the FRTP tubular molded body of the first embodiment obtained by using the sleeve 20 woven with the ribbon-shaped FRTP molding material 1, the sleeve 2 is used.
Since the ribbon-shaped reinforcing fiber tow 2 of the ribbon-shaped FRTP molding material 1 constituting 0 is thin and flat, there is a space between the tows at the intersection of the ribbon-shaped reinforcing fiber tows 2. Since the step difference is small and therefore the voids generated in this portion are small, the voids and the like remaining in the product are minute and the strength is excellent. Also, this FRT
The P tubular molded body is inexpensive because it is obtained by using the inexpensive ribbon-shaped FRTP molding material 1. Figure 5
Is for explaining the effect of the FRTP tubular molded body of the first embodiment, in which the sleeve 20 of FIG. 3 is heated to melt the thermoplastic resin 3a forming the thermoplastic resin film 3,
It is impregnated into a ribbon-shaped reinforcing fiber tow 2,
It can be seen that the step difference between the tows at the intersection of the ribbon-shaped reinforcing fiber tows 2 is small.

In the FRTP tubular molded body of the first embodiment described above, the ribbon-shaped FRTP molding material 1 using the ribbon-shaped reinforcing fiber tow 2 is used. The same can be done in the case of using a ribbon-shaped FRTP molding material in which both ends along the longitudinal direction of a laminated body sandwiched between wider matrix resin supplying thermoplastic resin films are fused. The ribbon-shaped yarn used here is a thin and flat yarn obtained by opening a roving composed of matrix fibers of a thermoplastic resin and reinforcing fibers.

Further, the above-mentioned ribbon-shaped reinforcing fiber tow 2
Matrix fibers of thermoplastic resin may be contained therein. Further, as the laminated body 4 of the ribbon-shaped FRTP molding material 1, the ribbon-shaped reinforcing fiber tow 2 or the above-mentioned ribbon-shaped yarn and a wider thermoplastic resin film for supplying matrix resin are alternately formed. It may be an alternating laminated body in which the layers are laminated. Also, the above-mentioned ribbon-shaped FR
In the manufacturing example of the TP molding material 1, the case where the heat roll is used as the manufacturing apparatus has been described, but a belt, a press or the like may be used. In the manufacturing example of the FRTP tubular molded body of the first embodiment described above, the case of manufacturing by the hollow internal pressure molding method using the sleeve 20 formed by weaving the ribbon-shaped FRTP molding material 1 has been described. A woven cloth formed by interweaving a material FRTP molding material 1,
A prepreg for filament winding may be produced by using the ribbon-shaped FRTP molding material 1 and manufactured by various molding methods such as an autoclave molding method and a filament winding method. In that case, since the ribbon-shaped FRTP molding material 1 is flexible as described above,
Easy to wind around the core.

Next, a second embodiment of the FRTP tubular molded body of the present invention will be described. FRTP of this second embodiment
The tubular molded body is different from the FRTP tubular molded body of the first embodiment in that it is obtained by using a wide FRTP molding material 30 as shown in FIG. This wide FRTP
The molding material 30 is composed of a plurality of ribbon-shaped FRTP molding materials 1 shown in FIG. 1 (six in the drawing), and ends of the adjacent ribbon-shaped FRTP molding materials 1 and 1 along the longitudinal direction. 5 and 5 are arranged so as to overlap each other, and the overlapping portions 31 ... Of these ribbon-shaped FRTP molding materials 1 ... Are fused and the reinforcing fibers are arranged in one direction. It is a thing. This wide FRTP molding material 30
Has a thickness of 1.0 mm or less, preferably 0.5 mm or less.

7 to 9 show the wide F shown in FIG.
It is a figure for demonstrating the manufacturing apparatus used suitably for manufacture of the RTP molding material 30. In the figure, reference numeral 34 is a first delivery roller, 35 is a first guide roller, 36 is a silicone rubber roll, 37 is a first heat roll, 38 is a press roll, and 39
Is a drum.

Using the apparatus shown in FIG. 8, the wide FRTP molding material 30 shown in FIG. 6 is manufactured by the following steps. The ribbon-shaped FRT molding materials 1 ...
The P-molding material 1, 1 is fed to the first guide roller 35 so that the end portions 5, 5 along the longitudinal direction of the P-molding material 1, 1 overlap each other, and these ribbon-shaped FRTP molding materials 1 ... (6 sheets in the drawing). The silicone rubber roll 36 and the first heating roll 37
And send it to and heat it. Then, as shown in FIG. 9, the surface temperature of the portion A ... where the first heat roll 37 contacts the overlapping portion 31 ... Of the ribbon-shaped FRTP molding material 1 ... Since the surface temperature is higher than that of the portion B, which comes into contact with other portions, the temperature applied to the overlapping portion 31 of the ribbon-shaped FRTP molding material 1 ... The temperature is higher than the temperature applied to the parts other than the parts 31 ...

Then, a plurality of ribbon-shaped FRTP molding materials 1 ... Are provided between the silicone rubber roll 36 and the first heating roll 37 along the longitudinal direction of the adjacent ribbon-shaped FRTP molding materials 1, 1. The end portions 5 and 5 are arranged so as to be overlapped with each other and fed between the press roll 38 and the drum 39, and the ribbon-shaped FRTP molding material 1 ... Is pressed by the press roll 38 and wound around the drum 39. When taken, the thermoplastic resin films 3 of the ribbon-shaped FRTP molding materials 1 and 1 adjacent to each other located in the overlapping portion 31 of the ribbon-shaped FRTP molding material 1 ...
A wide FRTP molding material 30 as shown in FIG. 6 in which ribbon-shaped FRTP molding materials 1 ...

The wide FRTP molding material 30 having the above-mentioned structure has the same effects as the above-mentioned ribbon-shaped FRTP molding material 1 and is wide. Depending on the application, it can be used as it is as a prepreg for molding without producing a sleeve or a woven fabric. The FRTP tubular molded body of the second embodiment obtained by using such a wide FRTP molding material 30 has the same effects as the FRTP tubular molded body of the first embodiment described above. When the wide FRTP molding material 30 is directly used as a prepreg, the F
In the RTP molding material 30, since the reinforcing fibers are aligned in one direction, there is no intersection between the reinforcing fibers, and therefore voids caused by voids generated at the intersection between the reinforcing fibers are generated. It is less likely to remain in the product, resulting in higher strength.

In the manufacturing example of the wide FRTP molding material 30 described above, the heating device is only the first heat roll 37, but a heat roll may be provided instead of the first guide roller 35. Instead of providing the first heat roll 37 at a position facing the silicone rubber roll 36, the first heat roll 37 may be provided at a position facing the drum 39 as shown by a broken line in FIG. Instead of providing the roll 37, a plurality of blowers for blowing hot air are provided in front of the pressing roll 38 and the drum 39, and a ribbon-shaped F is fed between the pressing roll 38 and the drum 39.
The temperature applied to the overlapping portions 31 ... Of the RTP molding material 1 ... May be set higher than the temperature applied to the portions other than these overlapping portions 31.

FIG. 10 is a view showing another example of the manufacturing apparatus preferably used for manufacturing the wide FRTP molding material 30 shown in FIG. In the figure, reference numeral 44 is a first delivery roller, 45 is a first guide roller, 46 is a silicon rubber roll, 47 is a first heat roll, 48 is a pressing roll, 49 is a drum, and 50 is a movable plate. A first feed roller 44, a first guide roller 45, a silicon rubber roll 46, and a first heat roll 47 are installed on the movable plate 50 so that the movable plate 50 can traverse along the length direction of the drum 49. There is.

Using the apparatus shown in FIG. 10, the wide FRTP molding material 30 of FIG. 6 is manufactured by the batch method by the following steps. While moving the movable plate 50 along the length direction of the drum 49, one ribbon-shaped FRTP molding material 1 is fed from the first delivery roller 44 through the first guide roller 45 and the silicon rubber roll 46 and the first heat roll. 47
Between the press roll 48 and the drum 49 to heat the ribbon-shaped FRTP molding material 1 with the press roll 48 and the drum 49.
When the tape is wound on the drum 39, the end portion 5 of the ribbon-shaped FRTP molding material 1 wound on the drum 39 first and the end portion 5 of the ribbon-shaped FRTP molding material 1 wound on the drum 39 later are overlapped with each other. The movable plate 50 is moved to. In this way, the thermoplastic resin films 3 and 3 located in the overlapping portion 31 of the ribbon-shaped FRTP molding material 1 are fused together, and the wide FRTP molding material 30 as shown in FIG.
Is obtained.

[0030]

As described above, the FRTP molding material of the present invention is formed by fusing a laminated body in which reinforcing fibers are sandwiched between matrix resin supplying thermoplastic resin films, and therefore the thermoplastic resin Since the resin film is hard to peel off, and the reinforcing fibers are surrounded by the thermoplastic resin film, the reinforcing fibers do not come apart,
It has the advantages that it is easy to handle when producing a sleeve or the like, that the reinforcing fibers do not fluff, and that it is flexible. Further, since the ribbon-shaped FRTP molding material or the wide FRTP molding material of the present invention has the above-mentioned constitution, the reinforcing fiber is well impregnated with the thermoplastic resin, and the degree of freedom in design is high. It has the advantages of large size, good handleability, no fluffing of the reinforcing fibers, and flexibility. Further, the FRTP tubular molded body of the present invention is the above-mentioned FRTP molding material or a wide F
Since it is obtained by using the RTP molding material, it has advantages of excellent strength and low cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a ribbon-shaped FRTP molding material used for the FRTP tubular molded body of the first embodiment.

FIG. 2 is a schematic configuration diagram showing an example of a manufacturing apparatus preferably used for manufacturing the ribbon-shaped FRTP molding material shown in FIG.

FIG. 3 is a front view showing an example of a sleeve used in the FRTP tubular molded body of the first embodiment.

FIG. 4 is a drawing for explaining an example of manufacturing the FRTP tubular molded body of the first embodiment.

FIG. 5 is a diagram for explaining the effect of the FRTP tubular molded body of the first embodiment.

FIG. 6 is a cross-sectional view showing an example of a wide FRTP molding material used for the FRTP tubular molded body of the second embodiment.

FIG. 7 is a schematic configuration diagram for explaining a manufacturing apparatus preferably used for manufacturing the wide FRTP molding material shown in FIG.

FIG. 8 is a perspective view showing a manufacturing apparatus preferably used for manufacturing the wide FRTP molding material shown in FIG.

9 is a partially enlarged view of the manufacturing apparatus shown in FIG.

10 is a perspective view showing another example of the manufacturing apparatus preferably used for manufacturing the wide FRTP molding material shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ribbon-shaped FRTP molding material, 2 ... Ribbon-shaped reinforcing fiber tow, 3 ... Thermoplastic resin film for matrix resin supply, 4 ... Laminated body, 5 ... End part , 6 ... intermediate part, 30 ... wide FRTP molding material, 31 ... overlapping part.

Claims (5)

[Claims] 1. A FRTP molding material obtained by fusing a laminate in which reinforcing fibers are sandwiched between thermoplastic resin films for supplying a matrix resin. 2. Both ends along the longitudinal direction of a laminate formed by sandwiching a ribbon-shaped reinforcing fiber tow or a ribbon-shaped yarn with a thermoplastic resin film for supplying a matrix resin wider than the ribbon-shaped reinforcing fiber tow or the ribbon-shaped yarn. Ribbon-shaped FR
TP molding material. 3. The FRTP molding material according to claim 1, wherein the laminate is an alternate laminate of reinforcing fibers and a matrix resin-supplying thermoplastic resin film. 4. A plurality of FRTP molding materials according to claim 1, 2 or 3 are arranged so that end portions of adjacent FRTP molding materials along the longitudinal direction of the FRTP molding materials overlap each other.
A wide F in which the overlapping portions of the RTP molding material are fused and the reinforcing fibers are arranged in one direction.
RTP molding material. 5. The FRTP according to claim 1, 2, 3 or 4.
A FRTP tubular molded body obtained by using a molding material.