JPH0550434A - Continuous preparation of rod-shaped fiber-reinforced resin material and apparatus thereof - Google Patents

Abstract

PURPOSE:To prepare continuously a rod-like fiber-reinforced resin material almost free from voids and if necessary, with high fiber content by preparing at first a sheet-like resin with a required fiber content and molding it into a rod-like shape. CONSTITUTION:A rod-like fiber-reinforced resin material wherein a reinforcing fiber is impregnated with a thermoplastic resin is prepd. In this case, the thermoplastic resin in a fiber-reinforced thermoplastic resin sheet 14 wherein a reinforcing fiber 7 arranged into a sheet-like shape is impregnated with a thermoplastic resin, is made into a softened condition by means of heating rollers 13. Thereafter, the reinforcing fiber impregnated with the thermoplastic resin is passed through a groove provided on a molding roll 30 by every specified number of filaments under tension.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous manufacturing method of rod-shaped fiber-reinforced resin material and its apparatus.

[0002]

2. Description of the Related Art An electric wire coating method is widely known as a method for continuously producing a fiber-reinforced resin in a rod shape. That is, the molten resin is impregnated in the reinforcing fibers while the reinforcing fibers pass through the crosshead attached to the extruder, and then the reinforcing fibers are taken out after cooling.

[0003]

However, in the above method, since impregnation and shaping are performed at the same time, the fibers on the rod surface side obtained are impregnated with the thermoplastic resin, but the fibers in the central portion are not defoamed. Since it is insufficient, the impregnated resin becomes defective,
As a result, there is a problem that the physical properties of the obtained rod-shaped resin material deteriorate. Further, when trying to obtain a rod-shaped resin material having a high fiber content, the fiber is broken in the crosshead. Therefore, the fiber content of the rod-shaped resin material that is usually obtained is limited to 50 wt% or more. There is a problem in that it is difficult to manufacture the rod-shaped resin material containing the above fiber.

Further, as seen in thermosetting resins, a method in which so-called pultrusion molding is applied to a thermoplastic resin, in which a reinforcing fiber containing resin is passed through a hole to obtain a rod, is also conceivable. Is cut in the hole, which causes the inconvenience that it cannot be operated for a long time.

Therefore, the present invention aims to provide a method and an apparatus for continuously producing a rod-shaped fiber-reinforced resin material having a good resin impregnation property and a high fiber content. To do.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that the fiber content is high and the resin is impregnated by performing impregnation and shaping separately. The present invention has been found to be good, and the method of the present invention is arranged in a sheet shape in a method for producing a rod-shaped fiber-reinforced resin material in which a reinforcing fiber is impregnated with a thermoplastic resin. Fiber reinforced thermoplastic resin sheet impregnated with a thermoplastic resin reinforcing fiber, after the thermoplastic resin in a softened state, in the groove provided in the roll,
The reinforcing fiber impregnated with the thermoplastic resin is characterized in that a predetermined number of the reinforcing fibers are passed under tension.

A preferred embodiment of the continuous method for producing a rod-shaped fiber-reinforced resin material according to the present invention is a fiber-reinforced thermoplastic resin sheet obtained by impregnating a reinforcing fiber arranged in a sheet with a thermoplastic resin. Is 60 to 85% by weight, the thickness is 0.1 to 0.5 mm, and the void ratio of the fiber-reinforced thermoplastic resin sheet is 5% or less as an index of water absorption.

In the method for producing a rod-shaped fiber-reinforced resin material according to the present invention, immediately after an apparatus for producing a fiber-reinforced thermoplastic resin sheet obtained by impregnating a reinforcing fiber arranged in a sheet with a thermoplastic resin, When installing and using a device equipped with a shaping part that shapes the sheet-like material into a rod shape while the thermoplastic resin is still in a softened state, and a take-up part that receives the resin material formed into a rod shape And an unwinding part for unwinding a fiber-reinforced thermoplastic resin sheet obtained by impregnating a prefabricated reinforcing fiber arranged in a sheet with a thermoplastic resin, and a fiber-reinforced thermoplastic resin sheet with a constant width in the fiber direction. Cut part to cut, preheat part to preheat the cut sheet to soften the thermoplastic resin, shaping part to shape the sheet material into rod shape after softening the thermoplastic resin, forming into rod shape Resin That there is a case of using a device having a take-off Ru take-off section, it is possible to exhibit the effect of the present invention in any case.

[0009]

Concrete Structure The present invention will be described in detail below. In the present invention, the rod is a so-called rod shape, the cross section of which is a fixed shape,
The shape may be any shape, and the shape such as a circle, an ellipse, or a square is not limited. If the cross section is circular, the diameter is 1.5m
m to 4 mm is desirable. In the case of an elliptical cross section, the short diameter is preferably 1.5 mm or more and the long diameter is preferably 4 mm or less. If it has a rectangular cross section, its short side is 1.5 mm or more and its long side is 4 mm.
The following is desirable.

If it is less than 1.5 mm outside this range, fiber breakage is likely to occur during shaping, and if it exceeds 4 mm, the rod must be cooled sufficiently when shaping into a rod shape. Since the center part does not cool completely and the rod shape cannot be maintained, the production speed must be slowed down and the productivity decreases, and when using pellets for injection molding, if the rod is thick, fiber dispersion will be poor. Problems such as large variations in strength tend to occur.

In the present invention, a plurality of continuous fibers are those which are known as rovings, yarns and tows, which are aggregates of filaments constituting the fibers, and the filaments are sufficiently long. It has sufficient strength to pull on the molten thermoplastic resin coating film under the conditions of use. Examples of preferable materials include glass fibers, carbon fibers, and highly elastic synthetic resin fibers, but inorganic fibers such as silicon carbide fibers, alumina fibers, titanium fibers, boron fibers, and stainless metal fibers can also be used.

The diameter of the filament of the reinforcing fiber is usually 5 to 20 μm.
The required number of tows obtained by bundling 0 to 12000 are used according to the width of the fiber-reinforced thermoplastic resin sheet to be produced.

The synthetic resin fiber is preferably surface-treated so as to have adhesiveness with the impregnated thermoplastic resin, and it is necessary that the performance such as strength does not change with the melting temperature of the thermoplastic resin used. is there. Examples of the synthetic resin fiber include aramid fiber (registered trademark “Kepler” and the like).

The glass fiber or carbon fiber may be coated with a surface treatment agent such as a silane-based or titanium-based coupling agent on the surface of the fiber in order to improve the adhesiveness with the resin in accordance with the thermoplastic resin used. preferable. In addition, it is preferable in terms of handling to use a sizing agent so that the roving or tow is not loosened during handling.

The thermoplastic resin used in the present invention is
Polystyrene, polyvinyl chloride, high density polyethylene,
Polypropylene, nylon, polycarbonate, polybutylene terephthalate, polyethylene terephthalate,
Thermoplastic polyimide, polyether sulfone, polysulfone, polyetherimide (trademark "ULTE
M "), polyether ether ketone, and the like.
When these resins are used, it is preferable to dry them in advance, and it is more preferable to add a coupling agent such as titanium to the resin for the purpose of improving the adhesion with the fiber.

For forming the sheet by impregnating the above-mentioned fibers arranged in one direction with the above-mentioned thermoplastic resin, all known methods can be used. For example, a melt impregnation method of impregnating fibers with a thermoplastic resin in a molten state, a fluidized bed method of impregnating a powdery thermoplastic resin in a state of being suspended in a gas such as air or suspended in a liquid such as water And so on.

The fiber content of the fiber-reinforced thermoplastic resin sheet produced by such a method is preferably 60 to 85% by weight. If the fiber content is low, the physical properties are not sufficiently expressed, and conversely, if the fiber content is too high, the impregnation of the resin into the fiber is deteriorated and the physical properties are deteriorated.

The thickness of the fiber reinforced thermoplastic resin sheet is 0.
1 to 0.5 mm is desirable. In the case of a sheet of less than 0.1 mm, it is necessary to use a reinforcing fiber having a small filament number and a small filament diameter, but it is difficult to cut the thin fiber during the production of the fiber-reinforced thermoplastic resin sheet, and it is difficult to finish the sheet uniformly. In addition, there is a problem that filament breakage of the fiber occurs in the groove even when the rod is manufactured, and the broken filament is often accumulated in the groove, which makes it difficult to continue the operation.

When the sheet exceeds 0.5 mm, in many cases the resin is not dipped into the inside of the fiber bundle and impregnation is poor. When the rod is processed, fibers not impregnated on the surface of the rod. There is a problem that the rod quality is raised and the quality of the rod is deteriorated. In the fiber-reinforced thermoplastic resin sheet thus obtained, when the wetting of the fiber and the resin is poor, air bubbles remain at the interface between the fiber and the resin. It is generally said that such a state has a void.

Further, the smaller the number of voids, the higher the mechanical strength of the fiber-reinforced thermoplastic resin sheet, and it is necessary for the fiber-reinforced material to have as few voids as possible. As a matter of course, the rod manufactured from the fiber-reinforced thermoplastic resin sheet having less voids has better strength performance, and it is premised that the fiber-reinforced thermoplastic resin sheet used in the present invention has few voids. ..

As a method of measuring the amount of the voids, the present invention employs a method of immersing the fiber-reinforced thermoplastic resin sheet in a solvent having a high surface activity and measuring the weight change before and after soaking in the solvent. .. That is, it can be judged that the larger the change in weight, the larger the amount of solvent that penetrates into the voids, and the poorer the adhesion between the fiber and the resin, and the lower the strength.

In the present invention, water containing 20% alcohol was used as the solvent whose void fraction was measured. The void ratio defined in the present invention is as follows. That is,

[0023]

[Formula 1] A rod-shaped fiber-reinforced resin material using a fiber-reinforced thermoplastic resin sheet having a void ratio of 5% or more does not have a homogeneous state of fibers and resin and has low strength, which makes it difficult to use for structural material applications.

As a method for shaping the sheet-shaped resin thus obtained into a rod shape, all of the commonly known methods can be used. For example, a method in which a sheet-shaped resin is passed under pressure between a pair of rolls having a semicircular groove while the thermoplastic resin is in a molten state, tension is applied to fibers in the sheet-shaped resin, and a semicircular groove is formed. A method of pressing the resin while it is in a molten state onto one of the rolls is included.

Regarding the shape of the groove to be engraved on the roll, for example, in the case of a rod having a circular shape or an elliptical shape, the bottom surface of the groove needs to be semicircular, and in the case of a rectangular cross section, the bottom surface of the groove needs to be flat.
The depth of the groove is required to prevent the fiber bundle from protruding, and it is necessary to process the groove to a depth 3 to 6 times the thickness of the rod to be shaped. In addition, the width of the groove should be determined according to the thickness of the rod to be shaped, but since the thermoplastic resin shrinks in volume when it cools and solidifies from the molten state, allow this amount, and The width is engraved 3 to 25% larger, but the optimum width for the resin to be used should be determined by trial.

The pressure required for shaping is, for example, in the case of using a pair of shaping rolls, linear pressure, preferably 3 to.
It is 10 kg / cm ² . When the linear pressure is low, the tightness of the fiber bundles is poor and the rod strength does not increase. Also, the linear pressure is 10
If it exceeds kg / cm ² , the filaments constituting the fiber bundle are broken between the rolls and wound around the rolls, which hinders continuous operation.

When using one shaping roll, the tension applied to one fiber is preferably 4 to 12 kg / c.
m ² . If the tension is low, the tightness of the fiber bundles will be poor and the rod strength will not increase. Also, the tension is 12 kg / cm ^2.
If it exceeds, the filaments constituting the fiber bundle are strongly rubbed by the roll grooves and broken, and the filaments are wound around the rolls and interfere with continuous operation.

The temperature of the shaping roll is preferably high from the viewpoint of shaping property, but if it is too high, the resin deteriorates and the releasability deteriorates, which is not desirable. Therefore, a decision should be made between the glass transition temperature and the softening point of the thermoplastic resin.

For example, polystyrene, polypropylene,
Polyethylene, AS resin, ABS resin, ASA resin (polyacrylonitrile / polystyrene / polyacrylic acid ester), polymethylmethacrylate, nylon, polyacetal 60 to 80 ° C, polyethylene terephthalate / fluorine resin 70 to 90 ° C, 80 to 100 ° C. for polyphenylene oxide, 100 to 120 ° C. for polycarbonate, 120 to 130 ° C. for polyphenylene sulfide and polysulfone, 140 to 160 ° C. for polyether sulfone, and polyether ether ketone. For example, it is 130-140 degreeC.

The surface of the shaping roll is preferably smooth from the viewpoint of the releasability of the resin, and it is particularly preferable to coat it with Teflon, ceramic or the like.

It is preferable to provide a means for guiding the fibers in the sheet-shaped resin into the grooves of the shaping roll in a predetermined number. This means can be achieved, for example, by arranging cutter blades, rods, etc. at regular intervals and passing a predetermined number of fibers between them.

The rod-shaped fiber-reinforced resin material thus obtained may be used as it is, for example, as a fishing rod or the like, or may be used as a molding material for filament winding, compression molding or the like. Furthermore, it can be used as pellets for injection molding by cutting into a certain length.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described with reference to the typical embodiments shown in the drawings. In the following examples, the fiber feeding part A, the supplying part B, and the resin impregnating part C shown in FIG. 1 were according to the method and apparatus described in JP-B-2-48907.

FIG. 1 is a schematic side view showing an embodiment of the present invention, FIG. 2 is a sectional view of a shaping roll for shaping a sheet prepreg into a rod shape, and FIG. 3 is a shaping roll for a sheet prepreg. It is a front view which shows the distributor leading to.

As shown in FIG. 1, a manufacturing apparatus for carrying out the present invention comprises a sheet-shaped resin manufacturing section 101 comprising a fiber feeding section A, a supply section B, and a resin impregnating section C, a shaping 102 and a take-up section 103. Consists of. The fibers 2 delivered from the bobbin 1 provided in the fiber delivery part A are aligned in one direction by the aligner 3 of the supply part B, and then pass through the tension adjusting rolls 4, 5, 6 to form the fiber sheet 7.

Next, the fiber sheet 7 enters the resin impregnated portion C,
A thermoplastic resin plasticized by an extruder (not shown) is brought into contact with a lower belt 10 having a resin thin film applied on the surface thereof through a die 8 and the lower belt 10 or the upper belt 12 is provided.
The sheet-shaped resin 14 is obtained by pressure-contacting the heating roll 13 or 11 with the resin impregnated therethrough. The sheet-shaped resin 14 obtained in the sheet-shaped resin manufacturing unit 101 then passes through the distributor 20 and the shaping roll 30 of the shaping unit 102 while the resin is in the softened state, and becomes the rod-shaped fiber-reinforced resin material 50. Become.
A predetermined number of pins 21 are attached to the distributor 20, and a predetermined number of fibers in the sheet-shaped resin 14 are passed between the pins to form a fiber bundle in the grooves 31 provided on the surface of the shaping roll 30. It will be easy to guide. If it is not difficult to guide the fiber bundle to the groove 31 provided in the shaping roll 30, the distributor 20 can be omitted. The shaping roll 30 is provided with a required number of grooves 31,
The fiber bundle in the sheet-shaped resin 14 divided by the distributor 20 is shaped like a rod while passing through the groove while being pressed under tension. The rod-shaped fiber-reinforced resin material thus obtained is then cooled by a cooling unit (not shown) and then taken up by the take-up unit 103.

FIG. 4 is a schematic view showing another embodiment of the present invention. As shown in FIG. 4, a fiber-reinforced thermoplastic resin sheet roll 200 is unwound, passed through a guide roll 201, and then a heating device 202 heats the thermoplastic resin to a molten state. Then, the rod-shaped fiber-reinforced resin material 50 is wound from the distributor 20 through the shaping roll 30 and the take-up shaft 205 via the take-up shaft 204 to manufacture the rod-shaped fiber-reinforced resin material of the present invention. I can.

The distributor 20 and the shaping roll 30 must be temperature-controlled so that the resin in the molten state will not cool and harden. After leaving the shaping roll 30, it is possible to install a cooling device to rapidly maintain the rod shape in order to improve productivity.

[0039]

EXAMPLES The present invention will be described below with reference to examples. Example 1 The specifications of each part of the apparatus shown in FIG. 1 are 100 bobbins, extruder 30 mmφ, rolls 9, 11 and 13 width 400 mm, roll diameter 240 mmφ, upper and lower belts 10 and 12 thickness 0.
The one having a width of 5 mm and a width of 350 mm was used.

The distributor 20 comprises 26 pins 21 each having a diameter of 1 mm arranged at a pitch of 8 mm between the pin axes, and the shaping roll 30 has a roll diameter of 100 mmφ and a length of 240 mm and a diameter of 2 mm. Set the semi-circular groove 31 of 2 so that the distance between the centers is 8 mm.
The thing which provided 5 pieces was used.

Glass fiber 10 drawn from bobbin 1
After aligning 0 pieces in one direction by the aligner 3, the tension adjusting rolls 4, 5 and 6 were passed to obtain a fiber sheet 7 having a width of 200 mm.

On the other hand, polypropylene melted at 200 ° C. by an extruder (not shown) is applied to the surface of the lower belt 10 heated at 240 ° C. by a lower belt roll at a thickness of 70 μm through a die 8. did. Then, the above-mentioned sheet is used as a lower belt and an upper belt 1 heated by an upper belt roll 11.
Impregnation roll 1 heated to 240 ℃ sandwiched between 2
In the state shown in FIG. 1, 400 kg of tension was applied between 1 and 13 at a speed of 1 m / min. The sheet-like prepreg in which the glass fiber is impregnated with polypropylene in this manner is then passed between the pins 21 of the distributor 20 in a state where the glass fiber in the prepreg is divided into four pieces. Then, it was passed through a shaping roll in which a groove having a width of 2.3 mm and a depth of 10 mm was engraved. At this time, the distributor and the shaping roll are 70
Temperature control was performed at ℃. The tension per fiber bundle passed through the shaping roll was 4 kg.

The rod-shaped fiber-reinforced resin material thus obtained is cooled and the take-up rolls 15, 16, 17 of the take-up section 103 are cooled.
And was wound on the winding shaft 18.

Even after the continuous operation for 10 hours, there was no problem in production such as fiber breakage. Next, the distributor 20 and the shaping roll 30 were removed, and a fiber-reinforced thermoplastic resin sheet was manufactured for measuring the void ratio.

The fiber content and void content of the fiber reinforced thermoplastic resin sheet were measured to be 70 Wt% and 0.2%, respectively.
Met. The tensile strength of the obtained rod-shaped fiber-reinforced resin material was 120 kg / mm ² .

Further, a rod-shaped fiber reinforced resin material is added to 10 m.
It was cut into a length of m to obtain a master pellet for injection molding. The master pellets and polypropylene resin for injection molding were mixed to obtain an injection molding material having a fiber content of 30%, and the mixture was molded by an ordinary injection molding machine to obtain a molded product.
The tensile strength and the Izod impact strength of this molded product were 1100 kg / cm ² and 25 kg · cm / cm, respectively.

Example 2 100 glass fibers were changed to 140 carbon fibers, polypropylene was changed to polycarbonate, and the melting temperature in the extruder was changed from 200 ° C to 290 ° C and the heating temperature was changed from 240 ° C to 310 ° C. A sheet-shaped resin was obtained by the same procedure as in Example 1 except for the above. Then, the fibers in the resin are divided into 6 pieces and passed through a distributor, and the temperature of the shaping roll is set to 180.
A rod-shaped fiber reinforced resin material was obtained by the same treatment as in Example 1 except that the temperature was changed to ° C.

Then, in the same manner as in Example 1, the distributor 20 and the shaping roll 30 were removed, and a fiber-reinforced thermoplastic resin sheet was manufactured for measuring the void ratio. The measurement results of the fiber content rate and the void rate of the fiber-reinforced thermoplastic resin sheet thus obtained were 60 Wt% and 5.2%, respectively.

The tensile strength of the obtained rod-shaped fiber-reinforced resin material was 180 kg / mm ² . Further, as in Example 1, the rod-shaped fiber-reinforced resin material was cut into a length of 10 mm to obtain a master pellet for injection molding. The master pellets were mixed with a polycarbonate resin for injection molding to obtain an injection molding material having a fiber content of 30%, and molding was carried out by an ordinary injection molding machine to obtain a molded product. The tensile strength of this molded product was 1400 kg / cm ² , and the Izod impact strength was 29 kg · cm / cm.

Example 3 A fiber-reinforced thermoplastic resin sheet was produced under the same conditions as in Example 1 except that the distributor 20 and the shaping roll 30 were removed. The measurement results of the fiber content rate and the void rate of this sheet were 70 Wt% and 0.2%, respectively.

Next, the fiber-reinforced thermoplastic resin sheet 20.
0 through a guide roll 201, a heating device heated to 230 ° C. at a speed of 2 m / min, a distributor 20 and a shaping roll 30 which are exactly the same as those in Example 1, and a take-up roll 20.
The rod-shaped fiber reinforced resin material 205 while being taken up by 4
Got

The tensile strength of the rod-shaped fiber-reinforced resin material thus obtained was 122 kg / mm ² . Further, as in Example 1, the rod-shaped fiber reinforced resin material was set to 10 m.
It was cut into a length of m to obtain a master pellet for injection molding. The master pellets and polypropylene resin for injection molding were mixed to obtain an injection molding material having a fiber content of 30%, and the mixture was molded by an ordinary injection molding machine to obtain a molded product.
The tensile strength of this molded product was 1100 kg / cm ² , and the Izod impact strength was 26 kg · cm / cm.

Comparative Example 1 Polypropylene melted by an extruder was fed into a crosshead die having a hole having a diameter of 2 mm and a length of 300 mm. On the other hand, five glass fibers used in Example 1 were passed through the perforations, and molten polypropylene was contacted while passing through a crosshead heated to 220 ° C., and then taken out to obtain a rod-shaped fiber-reinforced resin having a Wf of 60%. I tried to get the material, but the fibers cut in the perforations in the crosshead,
I couldn't pick it up smoothly. Therefore, the number of glass fibers was reduced to four, the above operations were performed to coat the fibers with a resin, and then the glass was cooled to obtain a rod having a diameter of 2 mm. The measurement results of the fiber content and the void ratio of the obtained rod-shaped fiber-reinforced resin material were 50 Wt% and 5.2%, respectively.

The tensile strength of this rod-shaped fiber-reinforced resin material was 48 kg / mm ² . Further, the rod-shaped fiber-reinforced resin material was cut into a length of 10 mm to obtain a master pellet for injection molding. By mixing this master pellet with polypropylene resin for injection molding, the fiber content is 30%
Using an ordinary injection molding machine, a molded product was obtained. The tensile strength of this molded product is 700 kg /
The cm ² and Izod impact strength were 15 kg · cm / cm.

Comparative Example 2 A rod-shaped fiber-reinforced resin material and a fiber-reinforced thermoplastic resin sheet were produced in the same manner as in Example 1 except that a tension of 70 kg was applied between the impregnating rolls 11 and 13 for the fiber sheet. The tension per fiber bundle at the time of producing the rod-shaped fiber reinforcing material was 0.7 kg / cm ² .

The measurement results of the fiber content and void ratio of the fiber-reinforced thermoplastic resin sheet thus obtained are as follows:
It was 60 Wt% and 5.2%. The tensile strength of the obtained rod-shaped fiber-reinforced resin material was 60 kg / mm ² . Further, the rod-shaped fiber-reinforced resin material was cut into a length of 10 mm to obtain a master pellet for injection molding. The master pellets and polypropylene resin for injection molding were mixed to obtain an injection molding material having a fiber content of 30%, and the mixture was molded by an ordinary injection molding machine to obtain a molded product. The tensile strength of this molded product is 10 kg / cm ² , and the Izod impact strength is 1.
It was 5 kg · cm / cm.

Comparative Example 3 Instead of the distributor 20 and the shaping roll 30, a drawing die 30 having 25 holes 2 mm in diameter shown in FIG.
In the same manner as in Example 1, except that the rod-shaped fiber-reinforced resin material 50 was obtained by attaching 0 and passing the sheet-shaped resin 302 impregnated with the molten thermoplastic resin-reinforced fiber into the hole 301 and split with a certain width. A fiber reinforced resin material was manufactured. After 10 minutes from the start of the production, the fiber was cut at 3 of the 25 holes and the operation could not be continued.

[0058]

As described above, according to the present invention, since a sheet-shaped resin having a good impregnation property and having a desired fiber content is manufactured and then shaped into a rod, almost no voids are formed. The rod-shaped fiber-reinforced resin material having a high fiber content can be continuously obtained without the need and if necessary.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a shaping roll for shaping a sheet-shaped resin into a rod shape.

FIG. 3 is a front view showing a distributor that guides the sheet-shaped resin to a shaping roll.

FIG. 4 is a conceptual diagram showing another embodiment of the present invention.

FIG. 5 is a conceptual diagram in which a sheet-shaped resin is formed into a rod shape in a pultrusion molding die.

[Explanation of symbols]

 A Fiber feeding section B Supply section C Resin impregnation section 1 Bobbin 2 Fiber 3 Aligner 4 Tension adjusting roll 5 Tension adjusting roll 6 Tension adjusting roll 7 Fiber sheet 8 Die 9 Guide roll 10 Lower belt 11 Heating roll 12 Upper belt 13 Heating roll 14 sheet resin 15 transaction roll 16 transaction roll 17 guide roll 18 winding shaft 20 distributor 21 pin 30 shaping roll 31 groove 50 rod-shaped fiber reinforced resin material 101 sheet-shaped resin manufacturing unit 102 shaping unit 103 take-up unit 200 fiber Reinforcement thermoplastic resin sheet 201 Guide roll 202 Heating device 204 Take-up roll 205 Wind-up roll 300 Pultrusion molding die 301 Rod-forming hole 302 Sheet-shaped resin torn in a certain width

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical indication location B29L 31:06 4F (72) Inventor Misao Masuda 1190 Kasamacho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Toatsu Chemical (72) Inventor Satoshi Kishi 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Toatsu Chemical Co., Ltd. (72) Inventor Chiaki Maruko 1190, Kasama-cho, Sakae-ku, Yokohama, Kanagawa Mitsui Toatsu Chem., Ltd. ( 72) Inventor Hiroshi Tanabe 1190 Kasama-cho, Sakae-ku, Yokohama-shi, Kanagawa Mitsui Toatsu Chemical Co., Ltd.

Claims (5)

[Claims] 1. A method for producing a rod-shaped fiber-reinforced resin material in which reinforcing fibers are impregnated with a thermoplastic resin, wherein the reinforcing fibers arranged in a sheet shape are impregnated with the thermoplastic resin. A rod-shaped sheet characterized by allowing a reinforcing fiber impregnated with a thermoplastic resin to pass under tension in a predetermined number in a groove provided in a roll after the sheet is made into a softened state of the thermoplastic resin. Continuous production method of fiber-reinforced resin material. 2. A fiber-reinforced thermoplastic resin sheet obtained by impregnating a reinforcing fiber arranged in a sheet with a thermoplastic resin has a fiber content of 60 to 85% by weight and a thickness of 0.1 to 0.
2. The continuous method for producing a rod-shaped fiber-reinforced resin material according to claim 1, wherein the fiber-reinforced thermoplastic resin sheet has a void ratio of 5 mm or less as an index of water absorption of 5% or less. 3. An apparatus for producing a rod-shaped fiber-reinforced resin material in which reinforcing fibers are impregnated with a thermoplastic resin, wherein a fiber feeding portion for feeding a plurality of fibers and fibers are aligned in one direction to form a sheet. A supply unit having means, an impregnation unit for impregnating the reinforcing fiber with the thermoplastic resin, a shaping unit for shaping the sheet-shaped resin impregnated with the resin into a rod shape, and a take-up unit for taking the rod-shaped resin. An apparatus for continuously producing a rod-shaped fiber-reinforced resin material, comprising: 4. An impregnating section, a pair of belts passing in an S-shape between a plurality of heating rolls, a plurality of heating rolls for heating the belts, and an extruder for applying a molten thermoplastic resin to the lower belt surface. 4. The rod shape according to claim 3, comprising a die, a driving mechanism for driving the heating roll, and the shaping section having a shaping roller having a groove provided immediately after the impregnating section. Continuous production equipment for fiber reinforced resin materials. 5. An apparatus for producing a rod-shaped fiber reinforcing material in which reinforcing fibers are impregnated with a thermoplastic resin, and an unwinding part for unwinding a sheet in which the reinforcing fibers are impregnated with the thermoplastic resin, and a fiber-reinforced thermoplastic material. A cutting portion that cuts the resin sheet into a certain width in the fiber direction, a preheating portion that preheats the cut sheet to soften the thermoplastic resin, a shaping portion that shapes the softened sheet into a rod shape, and a rod. An apparatus for continuously producing a rod-shaped fiber-reinforced resin material, comprising: a take-up section for taking the fiber-shaped fiber-reinforced resin material.