JPS6036136A - Manufacture of long-sized product of thermoplastic resin reinforced with fiber - Google Patents

Abstract

PURPOSE:To effectively manufacture a thermoplastic resin composite material reinforced with a long fiber by a method wherein a reinforced fiber bundle is brought continuously into contact with a thermoplastic resin below a specified melt viscosity and being transferred being pinched with a plate-like unit having a heating region heated above the softening point but below the decomposition temperature of the thermoplastic resin and a cooling region coinciding with it in the moving direction and the direction of fiber. CONSTITUTION:A carbon fiber bundle 1 made up by 3,000 pieces of carbon fibers 7mum in the diameter is fed to a resin bath 3 to which a polyphenylene sulfide PPS with the melt viscosity of 1,500 poise heated up to 310 deg.C from an extruder 2 and then, taken up from dies 4 with the diameter of 1mm. to obtain a 0.7mm.- diameter PPS-attached carbon fiber bundle 5. Subsequently, the bundle is driven with a pair of heating rolls 6 and cooling rolls 7 rotating in the direction of the arrow and fed between a pair of stainless steel endless belts 9 heated with an infrared heater 8 from the side of the heating rolls 6. Finally, it is taken up with a pair of rubber rolls 10 rotating in the direction of the arrow to obtain a long- sized product 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a fiber-reinforced thermoplastic resin elongate article in which a reinforcing fiber bundle is uniformly and sufficiently impregnated with a thermoplastic resin.

Thermoplastic resin composite materials reinforced with reinforcing fibers such as carbon fibers and glass fibers have excellent mechanical properties derived from the reinforcing fibers, and excellent moldability, heat fusion properties, and repair properties derived from the thermoplasticity of the resin. It is well known as a monthly fee that is both easy to use and recyclable. In particular, thermoplastic resin composite materials reinforced with long fibers have improved mechanical properties compared to the so-called FRTP, which is made by dispersing short fibers in thermoplastic resin for each reinforcement. Due to its remarkable effectiveness, it has been attracting attention in recent years. However, among these thermoplastic resin composite materials reinforced with long fibers, the most basic long fibers aligned in one direction Although there are high expectations for the performance of composite materials reinforced by this, there is currently no established method for efficiently manufacturing them.

In other words, in order for a fiber-reinforced composite material to exhibit the desired reinforcing effect of the reinforcing fibers, it is necessary that the voids between the reinforcing fibers in the composite material be completely filled with resin. It is difficult to achieve this good impregnated state using conventional techniques while maintaining a reinforcing form in which the reinforcing materials are aligned in one direction.

Among thermoplastic resin composite materials reinforced with long fibers, those in which the reinforcing form is made by randomly dispersing reinforcing fibers, those made by weaving and weaving reinforcing fibers are respectively mat-like materials, woven materials, An efficient melt impregnation method is well known in which a fabric material such as a knitted fabric, braided fabric, or net-like fabric and a thermoplastic resin are laminated and integrated under heating and pressure. In order to achieve this state, it is essential to make the viscous molten resin flow, and the reinforcing form is such that the flow of the reinforcing fibers accompanying the flow of the resin does not significantly impair the reinforcing effect of the reinforcing fibers, as in the case of the above-mentioned mat-like material. Alternatively, as in the above-mentioned cloth-like material, the reinforcing fibers mutually regulate the reinforcing structure, and the flow of the resin causes movement of the reinforcing fibers (if the reinforcing form is not strong enough, the desired reinforcing form and reinforcing effect cannot be obtained). Therefore, it is difficult to apply this method to produce a composite material reinforced with long fibers that are unilaterally aligned by ordinary press molding or the like.

This method is also used in the field of thermosetting resins.

That is, in order to apply a method such as impregnating the reinforcing fiber bundle with resin by passing it through a resin bath and then aligning it in one direction, the thermoplastic resin is dissolved in an appropriate solvent. The so-called wet impregnation method, which involves impregnating reinforcing fibers in the form of a low-viscosity solution, is also used, but this method requires a complicated solvent removal process and poses problems in the working environment. It cannot be said that this is an efficient molding method that takes advantage of the characteristics of

On the other hand, as a method for efficiently manufacturing a composite material reinforced with long fibers aligned in one direction, for example,
US Patent 5. ．． No. 995,726, a continuous length of reinforcing fiber bundle is passed through a crosshead extruder, the fiber bundle is impregnated with a thermoplastic resin under high pressure, and the fiber bundle is pulled out from the extruder through a die, cooled, and shaped. discloses a method for obtaining a molded product with a desired cross-sectional shape. However, the bending strength of the composite material made of glass fibers and polypropycin disclosed in the examples is 16.4 yuan when the glass fiber content is 73 folds, which is a theoretically estimated value. The achievement rate for about 90 kg/- is less than 20 inches, which is not an effective method for achieving both a good impregnation state and the desired reinforcement form. Note that the bending strength is a characteristic value that is sensitive to the impregnation state of the composite material, and the theoretically estimated value is the value calculated by the following formula.

nb='f-vf+%・(j"f) where σL
is the strength of the complementary material in the fiber direction σf is the strength of the reinforcing fibers σt is the fracture strain of the composite material, and the stress Vf generated in the resin is the volume fraction of the fibers.

Further, Japanese Patent Application Laid-open No. 57-IEM852 discloses a method in which a plurality of continuous fibers are drawn through a melt of a thermoplastic resin and the fibers are wetted with the melted resin. However, this method has a melt viscosity of 50 NEJld (approximately 300
This method is only effective for thermoplastic resins smaller than 1.0 mm (Poise), and is in a special field judging from the melt viscosity level of commonly used thermoplastic resins, and is not generally an effective method.

Therefore, the present inventors efficiently manufactured a long article of thermoplastic resin reinforced with reinforcing fibers aligned in one direction, in which the voids between the reinforcing fibers were sufficiently filled with resin. We conducted extensive research on methods that are effective for commonly used thermoplastic resins with relatively high melt viscosity, and discovered that it is effective to carry out the following specific steps, resulting in the present invention. Reached.

That is, the present invention provides: (A) a bundle or band of reinforcing fibers (reinforcing fiber bundle);
(B) to obtain a deposit in which the thermoplastic resin is attached to the reinforcing fiber bundle by continuously contacting the thermoplastic resin with a melt viscosity of 20,000 poise or less, While applying tension, two moving plate-like objects are heated in the direction of movement to a temperature above the softening point of the thermoplastic resin and below the decomposition temperature, and a heated region below the softening point of the thermoplastic resin. (q) In the heating area, reducing the interval between the plate-like objects, applying pressure to the kimono to obtain an impregnated product in which the entire cross section of the reinforcing fiber bundle is impregnated with the melt of the thermoplastic resin, and (b) in the cooling region,
Reinforcement with reinforcing fibers, comprising separating the impregnated material from the plate-like material downstream of a position where the thermoplastic resin adhering to the surface of the impregnated material and the plate-like material can be separated. The present invention provides a method for manufacturing a long thermoplastic resin article.

According to the method of the present invention, in the reinforcing fiber bundle to which the resin is attached in the above item (A), even when the resin is attached under preferable conditions, the resin is sufficiently filled in the voids between the fibers other than the outer layer of the fiber bundle. Although it is not impregnated,
In the methods of (B), (C), and (D) above, the voids between the reinforcing fibers are sufficiently filled with the resin by applying pressure to the deposits at a temperature of 2" above the softening point of the thermoplastic resin. By applying appropriate tension in the vertical direction of the reinforcing fibers, the reinforcing fibers are aligned in one direction. Since separation from the plate-like object is not performed until after the pressure is applied and the resin is cooled, the integrity of the reinforcing fibers and the resin is not impaired, and each of the items (B), (C), and (D) above is moved. Since the reinforcing fibers are aligned in one direction, and the voids between the reinforcing fibers are sufficiently filled with resin, it is possible to extremely efficiently manufacture a long article.

The bundle of reinforcing fibers used in the present invention consists of approximately 100 to several hundred thousand fibers, preferably 1,000 to 302,000 fibers.
It is a bundle of book reinforcing fibers gathered in the warp direction, and the presence or absence of twisting and the continuous or discontinuous fiber length can be selected as appropriate, but from the point of view of handling of the fiber bundle itself, it is twisted. From the viewpoint of reinforcing effect, it is preferable that the fiber bundle is continuous for as long as possible in the warp direction, and from the viewpoint of operability, it is more preferable that 50% or more of the fiber bundle is continuous. In addition, a belt-like material of supplementary l1iJi fibers is one in which reinforcing fibers are bundled so as to spread in a direction perpendicular to the fiber direction, and the fiber distribution in the cross section of the belt-like material is uniform; This includes both those in which the fibers are arranged in parallel and those in which the fiber distribution is non-uniform.

The reinforcing fibers used in the present invention are not particularly limited as long as they do not melt during molding, and include carbon fibers such as polyacrylonitrile μ-based, rayon-based, and pitch-based fibers, glass fibers, asbestos fibers, Examples include inorganic fibers such as metal fibers and synthetic fibers such as polyethylene terephthalate fibers and polyamide fibers.
More than one species can be used in combination. Furthermore, these reinforcing fibers can be used after being subjected to various surface treatments in order to improve their adhesion to the thermoplastic resin. Among the reinforcing fibers, carbon fibers and aromatic polyamide fibers are more preferable in terms of improving mechanical properties and being lightweight, and carbon fibers are particularly preferably used in terms of heat resistance.

The thermoplastic resin used in the present invention needs to have a melt viscosity of 20,000 poise or less at the temperature of the heating region in the method of the present invention, and more preferably 15,000 poise or less in terms of impregnation. If the poise is exceeded, it is difficult to sufficiently impregnate the reinforcing fiber bundle with the resin even by the method of the present invention, which is not preferable. On the other hand, there is no particular limit on the lower limit of the melt viscosity, but if the melt viscosity is extremely low, it is difficult to expect excellent composite material performance due to the low molecular weight. Since it is often difficult to eliminate fine voids during molding due to the low poise itself, a value of 200 poise or more, more preferably 350 poise or more may be selected. Note that the melt viscosity in the present invention refers to the melt viscosity under a relatively low shredding speed, and it is convenient to measure Newtonian viscosity using a capillary viscometer using a die with a diameter of 0.5 mm and a length of 1 mm. Assuming a shredding speed of 50-50
Measured in the range of 0 sec"".

The type of thermoplastic resin used in the present invention is not particularly limited, but among them, nylon 6, nylon 66, nylon 11
, polyamides such as nylon 12, nylon 610, and nylon 612, or copolymerized polyamides thereof, polyesters such as polyethylene terephthalate, polybutylene terephthalate, or copolymerized polyesters, polycarbonates such as polybisphenol A carbonate,
Polyamide imide, polyether amide, polyether imide, polyphenylene sulfide, polyphenylene oxide, polysulfone, polyether sulfone, polyether ether ketone, polyolefin, styrene resin, acrylic resin, etc. can be preferably used. Additionally, these thermoplastic resins contain various additives to improve their properties.

For example, heat resisting agents, weathering agents, ultraviolet deterioration inhibitors, antistatic agents, lubricants, mold release agents, +1 color agents such as dyes and pigments, crystallization accelerators, flame retardants, etc. can be contained.

There are no particular limitations on the method of obtaining an example kimono in which the thermoplastic resin is attached to the reinforcing fiber bundle by continuously bringing the reinforcing fiber bundle into contact with the melt of the thermoplastic resin in the above-mentioned (A) of the present invention. For example, (1) a method in which the reinforcing fiber bundle is immersed or passed through a resin bath in a molten state, (2) a method in which the reinforcing fiber bundle is melt-coated with molten resin using a normal wire coating die, (6) A lamination method in which the surface of the reinforcing fiber bundle is coated with molten resin supplied from an extruder, and (4)
) Examples include a method of attaching powdered thermoplastic (V1 fat) to reinforcing fiber bundles, among which methods (1) to (3) above apply immediately after applying the resin (II (the fat is still in a molten state). It is efficient in that it can be supplied to the subsequent process as it is.There is no particular limit to the amount of resin deposited at this time, but if the reinforcing fiber fraction in the deposit is 10 to 70 volume. From the viewpoint of reinforcing effect, it is preferable that the deposit be within the range of , it is also possible to arrange them parallel to each other and feed them to a subsequent process in order to obtain a strip in the subsequent process.

In the present invention, the appropriate tension applied in the fiber direction is
The structure is sufficiently weak that it does not inhibit the impregnation of the resin into the reinforcing fiber bundle when applying pressure to the adhesion without causing the reinforcing fiber bundle to break, and the reinforcing fibers are aligned in one direction. It refers to a tension in a range strong enough to maintain the tension, and can be selected as appropriate within this range, but usually a tension of 10 to 1009 Am'' based on the cross-sectional area of the reinforcing fibers is selected. There are no particular restrictions on the fibers, but for example, if the fibers are held between a pair of rotating rolls while applying tension, or if the process of applying the thermoplastic resin and the subsequent process are performed continuously, Examples include a method of applying tension by resistance when the bundle is fed from a bobbin or the like, or resistance when passing the bundle through a resin bath, a die, or the like.

In the present invention, the above-mentioned (B) (C) and (I)
) There is no particular restriction as long as it satisfies the requirements, metal,
It is possible to use paper, synthetic resin, or a combination thereof, and if necessary, it is also possible to apply a mold release agent etc., but at the temperature of the heating area in the present invention, It is necessary to have sufficient shape retention to add compression to the above-mentioned 11 kimono, especially paper,
For those made of synthetic resin, the selection of the material and the following properties are required. In addition, in terms of abrasiveness and operability, it is compatible with flexibility, but in terms of heat resistance, it is compatible with stainless steel f--/I/u.
Q: In terms of pH+L type property, it is more preferable to use a fluororesin, and in terms of shape, it is more preferable to use a pair of endless belts that can be substantially regarded as plate-like objects in terms of efficiency.

In addition, as a method to achieve substantially the same effect as obtaining deposits in item (A) above, a reinforcing fiber bundle and a thermoplastic resin sheet or tape, etc. are placed between two plate-like objects. It is also possible to supply them in duplicate.

The temperature equal to or higher than the softening point of the thermoplastic resin in the heating region of the present invention is substantially the temperature of the resin when the deposit is suppressed, and this is the temperature at which the deposit is preheated and/or the deposit is applied. It is delivered via two plate-like objects that sandwich the kimono. This resin temperature must be at least higher than the softening point of the thermoplastic resin, and it is necessary to achieve a melt viscosity of 2000 poise or less according to item 4) of the present invention. Sufficient impregnation of the resin into the resin is not achieved. More specific methods of temperature control include (a) heating the deposit to a temperature higher than the softening point of the resin, and then sandwiching it between plate-shaped objects, and (b) directly heating the plate-shaped object with radiant heat. A method of heating the plate-like object by conduction heating by applying C9 pressure and heating the mechanism itself, (
→ Examples include a method of combining two or more of (a), (b), and e). Furthermore, the softening point of a thermoplastic resin defined herein is the melting temperature of crystals in the case of a crystalline thermoplastic resin, and the glass transition temperature in the case of an amorphous thermoplastic resin.

In the present invention, the suppression applied to the kimono (a) is achieved by reducing the distance between the plate-like objects at a temperature above the softening point of the thermoplastic resin (°C1), thereby reducing the m
It is important to add the resin to an extent that substantially reduces the vertical dimension of the plate-shaped object, and if this condition is not met, sufficient impregnation of the resin into the reinforcing fiber bundle will not be achieved. Here, the reduction in the dimension of the deposit in the direction perpendicular to the plate-like object is within the range of 20 to 80 inches, and if the reduction rate is too small, the resin Impregnation will be insufficient, and if it is too large, the fiber direction will be disturbed and the fibers will be damaged, which is not preferable. Specific methods for adding push [-(E) include a method of passing the plate-like object between at least a pair of rolls, a method of applying hydrostatic pressure to the i'+11 plate-like object, etc. It is not limited to.

The temperature of the cooling region in the present invention needs to be below the softening point of the thermoplastic resin; if this condition is not met, the thermoplastic resin in the impregnated material will not become stiff;
Since the molten state remains constant, when the impregnated material is separated from the plate-like material, each component in the impregnated material adheres to the plate-like material V, and the integrity and reinforcement form of the impregnated material are damaged. This is not desirable as it can cause damage. There are no particular restrictions on the method of temperature control in the cooling area, but examples include natural cooling, forcibly blowing cold air onto the plate, spraying water, and bringing rollers into contact with cooling water. is exemplified. Further, in order to ensure the integrity of the impregnated material from the heating region to the cooling region, it is possible to apply pressure with a roll or the like as appropriate.

In the present invention, the moving speed of the plate-shaped object is within a range that is sufficiently slow to obtain the desired temperature in the heating and cooling regions, and sufficiently slow so as not to cause damage to the deposits or impregnated materials. If so, there are no particular restrictions, and as long as the above conditions are met, the faster the speed, the better in terms of efficiency.
Typically, a speed of 0.1 to 10111/9 may be selected. In addition, in the present invention, it is possible to carry out the step of obtaining the attached yα product in the above (A), the impregnation and solidification steps in the above (B), (C) and history) in a continuous process,
Furthermore, it is also possible to continuously transfer the obtained elongated object to the subsequent molding process. In the thus obtained long article of thermoplastic resin reinforced with the reinforcing fibers of the present invention, the reinforcing fiber bundles are sufficiently impregnated with the resin, all the gaps between the stacked sc are filled with the resin, and the reinforcing fibers are fully impregnated with the resin. This allows the excellent reinforcing performance of the steel to be effectively exhibited. Further, the long material obtained by the present invention can be used as is for the purpose of type 4, but it is also possible to roll it under tension on a drum, for example.
Molding methods include a method of heating the resin to a temperature higher than its melting point to obtain a molded article, and a method of heating and pressurizing a long article as it is or cutting it into appropriate pieces to form a desired arrangement or dispersion state. to obtain composite sheets and composite molded products reinforced with long fibers in a desired form of reinforcement.
It is particularly suitable, and the composite sheets and composite molded products thus obtained have reinforcing fibers distributed in a desired reinforcing form, are sufficiently impregnated with resin, and exhibit excellent reinforcing effects.

The present invention will be explained in more detail with reference to Examples below.

Example 1 A carbon fiber bundle consisting of 5,000 carbon fibers with a diameter of 7 μm (Torayka 'T300 manufactured by Toshi ■) and polyphenylene/sulfide having a melt viscosity of 1,500 poise at 310° C. (manufactured by Phillips Petroleum, USA). (Below p.
The process of the present invention, which is schematically shown in FIG. 1, was continuously carried out under the following conditions to obtain a carbon fiber-reinforced polyphenylene sulfide elongate product.

That is, the carbon fiber bundle 1 is heated to 510°C by the extruder 2.
The resin bath 3 is supplied with pps heated to
After obtaining the PPS deposit S of the carbon fiber bundle (2), the pair of heating rollers/I/6 rotating in the direction of the arrow and the cooling roller 7 drive the pair of rollers heated by the infrared heater a. A long object 11 was obtained by feeding it from the heated row/l/6 side between endless belts 90 made of stainless steel and taking it off by a pair of rubber rows 10 rotating in the direction of the arrow. .

Here, the heating roll 6 is heated to 3'20°C by electric heating, and the cooling roll 7 is used through cooling water in the chamber YM1, the diameter of the roll is 550cm, the rotation speed is about 6 times/min, o-)
The center distance between v 6.7 is 2000, and the distance between
v6.7 mutual axis distance.

The gap between the pair of heat-sealed μ plates 9 was set to J: 0.3 mm. Also, the thickness and width of the endless belt 9 are 0, respectively.
．． 611jl, about 25011111, the part where the deposit 5 is pressurized by the applying H4 low tv 6, and the cooling low Iv? The belt surface temperature at the location where the long object 11 is separated in the vicinity is 310 ± 5 tE, O 6 and 22, respectively.
The temperature was controlled within the range of 0±5°C. The obtained long object had a flat cross section, the carbon fiber content in the long object was about 50 by volume, and an optical microscope observation was performed on a thin section about 100 μ thick cut vertically 1H in the longitudinal direction. However, the carbon fibers and the pps were completely integrated, and the impregnation of the pps into the carbon fiber bundle was good.

Next, this long material was cut into lengths in the order of 150, aligned in one direction, set at 310°C, and integrated with a pressure of 2 kFIlca in a pair of flat molds, so that the arrangement of the carbon fibers was disturbed. A sheet molded product having a thickness of about 2.511#I and having a good appearance without any cracks was obtained. A bending test was performed on a test piece cut from this sheet according to ASTM Il-790, and the bending strength and bending modulus were as follows.

16G tqt/c4.10.5ton/each
ioF, and the bending strength is a theoretically estimated value of 175
The achievement rate was 91 cm for kgArt', and it was confirmed that both the impregnation state and the alignment state of the carbon fibers were good.

Comparative Example 1 In Example 1, the temperature of heating row A/6 was set to 260°C,
A long piece of cloth was obtained in exactly the same manner as in Example 1, except that the infrared heater 8 was not activated and the piece of cloth 5 was cooled and solidified and then fed between a pair of endless belts 90. . The obtained long material had a flat cross section, but when a section for observation was prepared in the same manner as in Example 1, impregnation of Pps into the carbon fiber bundle was not realized, and it was found that it was just a coating. structure, and the carbon fiber in the core fell off during sectioning.

Example 2 A deposit with pps attached to a carbon fiber bundle was obtained in exactly the same manner as in Example 1.
The process shown in the schematic diagram in Figure 1@2 was carried out continuously under conditions of approximately 1 or less pieces of wood, and a carbon fiber-reinforced pps sheet-like elongated product was obtained.

That is, 40 pieces of the above-mentioned adhesion (12) are divided into 10 trees/1 (J
It is continuously supplied to a pair of rubber rows A/13 which are arranged horizontally at equal intervals at a ratio of 1 and rotated in the direction of the arrow, and then heated by an infrared heater 14, and then, A pair of heating rolls 1 rotating in the direction of the arrow -C
5 and a cooling roller 16, and a supply section 17
Two aluminum sheets 19 are continuously supplied and wound up continuously to the winding section 1B while moving in the direction of the red stamp, and a silicone-based mold release agent (Toray Silicon ■
A heated loaf 1z15 was fed between the sheets coated with H2O2 and taken up by a rubber roll 20 rotating in the direction of the arrow, thereby obtaining a sheet-like elongated object 21. .

Here, the diameter of the heating rho/l/15 is about 550, and it is heated to 630°C by electric heating.
The distance between the axes between the rolls 15 and 16 was 2000 K11, and the mutual spacing between the rolls 15 and 16 was set so that the gap between the aluminum sheets 1 and 19 was 0.2 K. In addition, the thickness of the aluminum sheet 19 is approximately 0.05 mm, and the area 160±
The temperature was 10°C. Rho/l/13, Is, 16 and 2
The rotational speed of 0 was set so that the moving speed of the deposit 12 and the elongated object 21 was approximately 2 m/min, and an appropriate tension was applied to the deposit 12.

The thickness of the obtained long product was about 0.2++ m, the width was about 40 cm, the carbon fiber content was about 50 cm, and when observed in the same manner as in Example 1, it was pps. The state of impregnation into the carbon fiber bundle was good, and the arrangement of the fibers was also good.

Example 6 Instead of the carbon fiber bundle used in Example 2, carbon fiber bundles with a fineness of about 0,
26g/m glass fiber bundle (Made by Asahi Fiberglass 1)
Using Graslon Yarn IE (:G1501/8),
Melt viscosity at 250゛0 is 700 instead of ppsO
Poise nylon 6 (CM1001 manufactured by Toshikuhiba)
using I'F-sa of about 0.05 instead of the aluminum sheet.
111I polytetrafluoroethylene sheet with Teflon tape manufactured by Chias ■), the temperature of the resin in resin bath 3 was set to 250°C, and the temperature was increased to 2-〇? Low two 15 temperature 25
The temperature was set at 5°C, and a long sheet of nylon 60 reinforced with glass fibers was obtained in exactly the same manner as in Example 2. The thickness of the obtained long product was about 0.2mm, the width was about 40mm, the arrangement of the glass fibers was good, and when inspected using the same method as in Example 1, the impregnation state was good. there were.

Next, cut this long object into a length of 150 fl.
The two sheets are laminated with the fiber directions aligned and integrated with a pair of flat molds set at 260°C under a pressure of 1 k41/cA to form a glass fiber with good appearance and no disturbance in the arrangement of the glass fibers.
A very thick sheet molded product was obtained. The glass fiber content in this sheet was 55% by volume, and the bending strength and bending elastic modulus measured on a test piece cut from this sheet were 90 kg/m11'', respectively.

5.4 ton/aJ, and the bending strength was 93% of the theoretically estimated value of 97 kg/mJ, confirming that both the impregnated state and the arrangement of the glass fibers were good. Ta.

Example 4 Instead of the pps used in Example 1, a resin listed in Table 1 with a melt viscosity at the temperature of the resin bath having a value as listed in Table 1 was used, and the resin bath temperature and heating roll were Table 1 shows the temperature.
A long article reinforced with carbon fibers was obtained in exactly the same manner as in Example 1, except that the values were set as described in .

The arrangement of carbon fibers in the obtained long material was good;
The impregnation state observed by the same method as in Example 1 was also good.

Table 1

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the first shift used in Example 1 of the present invention, and FIG. 2 is a schematic diagram of the 1st shift used in Example 2 of the present invention. FIG. 2 is a schematic diagram of lt. 1... Reinforcing fiber bundle 2... Extruder 3... Resin bath 4... Dice 5.12... Resin-attached fiber bundle 6.15... Heating roller 7.16... Cooling roller 8.14 ... Infrared heater 9, ... Stainless steel μ endless tube 1
0, 20... Take-off roller 11.21...
・Resin-impregnated fiber long article 19 ... Aluminum sheet patent applicant Toshi Co., Ltd.

Claims (1)

[Claims] (A) Bundle or band of reinforcing fibers (reinforcing fiber bundle)
Thermoplastic resin having a melt viscosity of 20,000 poise or less is brought into continuous contact with Tanbaro to obtain a deposit in which the thermoplastic resin adheres to the reinforcing fiber bundle, (B) The deposit is properly aligned in the fiber direction. (C) two moving plate-shaped objects heated in the direction of movement to a temperature above the softening point and below the decomposition temperature of the thermoplastic resin while applying a certain tension; (b) reducing the interval between the plate-like objects in a heating region to suppress the deposits, and obtaining an impregnated product in which the molten material of the thermoplastic resin is impregnated over the entire cross-sectional area of the reinforcing fiber bundle; In the cooling region, the impregnated material is separated from the plate-like material at a position downstream of a position where the thermoplastic resin adhering to the surface of the impregnated material and the plate-like material can be separated. A method of manufacturing a thermoplastic resin elongate reinforced with a reinforced edge A (i).