WO2011031040A2

WO2011031040A2 - Apparatus and method for molding a fiber-reinforced thermoplastic composite material, and mold produced by same

Info

Publication number: WO2011031040A2
Application number: PCT/KR2010/005969
Authority: WO
Inventors: 윤상준
Original assignee: (주)삼박
Priority date: 2009-09-09
Filing date: 2010-09-02
Publication date: 2011-03-17
Also published as: KR20110026982A; WO2011031040A3; KR101150470B1

Abstract

Disclosed are an apparatus and method for molding a fiber-reinforced thermoplastic composite material, and a mold produced by same. According to the present invention, the apparatus for molding a fiber-reinforced thermoplastic composite material comprises: an extruder having a housing with a melting space and an outlet port; a cutting apparatus arranged next to the extruder to cut the fiber-reinforced thermoplastic composite material prepared in the melting space and continuously discharged through the outlet port; a heating apparatus arranged next to the cutting apparatus to heat the fiber-reinforced thermoplastic composite material cut by the cutting apparatus; and a shaping apparatus arranged next to the heating apparatus to form the fiber-reinforced thermoplastic composite material heated by the heating apparatus into a predetermined shape. According to the present invention, damage to the reinforcing fibers can be minimized to achieve maximized effects of reinforcing physical properties, and processes for producing molds are continuously performed to achieve improved efficiency in producing molds from fiber-reinforced thermoplastic composite materials.

Description

Molding apparatus and molding method of fiber-reinforced thermoplastic composite materials and molded products using the same

The present invention relates to a fiber-reinforced thermoplastic composite material, and more particularly, to a molding apparatus and a molding method of a fiber-reinforced thermoplastic composite material which can maximize the physical reinforcing effect of the molded product by minimizing damage to the fiber in the molding process and a molded article using the same. It is about.

The use of synthetic resins is widely used throughout the industry, and molded articles using synthetic resins are rapidly increasing in the fields where metals have been applied.

The problem to be solved by such a synthetic resin molded article can be summarized as being about weight reduction and physical property improvement. Although there are differences depending on the application field, a lighter and stronger material is required. In particular, such demands are increasing in the fields of automobiles, electronics, and precision machine parts.

Among various synthetic resins, thermoplastic resins have excellent chemical resistance and moldability, but heat resistance and mechanical strength are relatively weak. Due to the characteristics of the thermoplastic resin, it cannot be applied as it is in a field requiring high strength, and has been used by reinforcing strength with various organic and inorganic materials.

In particular, various attempts have been made regarding reinforcing strength using reinforcing fibers. In reinforcing the strength by using the reinforcing fibers, it is very important to control the content of the reinforcing fibers and to include the reinforcing fibers in the form of long fibers without damaging the final molded product.

A typical example of a method of reinforcing strength using reinforcing fibers is to reinforce strength by adding and mixing thermoplastic resin and reinforcing fiber together in a kneading equipment such as an extruder.

However, in the conventional molding method, most of the reinforcing fibers are significantly damaged by the screw in the extruder during the melting and kneading process, and the reinforcing fibers of 1 mm or less are mixed with the thermoplastic resin and thus the strength is not sufficiently improved.

The present invention is to solve such a conventional problem, it is possible to reduce the breakage of the reinforcing fibers kneaded with the thermoplastic resin in the extruder to maximize the effect of reinforcing the physical properties of the reinforcing fibers by including a long enough reinforcing fibers in the molded article The present invention relates to a molding apparatus and a molding method of a fiber-reinforced thermoplastic composite material, and a molded article using the same.

The molding apparatus of the fiber-reinforced thermoplastic composite material according to the present invention for achieving the above object is, an extruder comprising a housing provided with a melt space and the outlet, the fiber-reinforced thermoplastic composite material continuously made through the outlet and made in the melt space A cutting device disposed downstream of the extruder to cut the heating device; a heating device disposed downstream of the cutting device for heating the fiber-reinforced thermoplastic composite material cut by the cutting device; and the fiber heated in the heating device. A shaping device disposed downstream of the heating device for shaping the reinforced thermoplastic composite material into a predetermined shape, wherein the extruder is a resin inlet provided upstream of the housing for injecting the resin composition into the melting space; Reinforcing fiber A fiber inlet provided on the downstream side of the housing, a heater for heating the resin composition introduced into the melting space, the resin composition introduced into the melting space, and the reinforcing fibers, which are installed in the melting space for kneading and transported to the outlet And kneading means.

The molding apparatus of the fiber-reinforced thermoplastic composite material according to the present invention may further include a die disposed between the extruder and the cutting device to uniform the thickness of the fiber-reinforced thermoplastic composite material continuously discharged through the outlet. Can be.

The molding apparatus of the fiber reinforced thermoplastic composite material according to the present invention has a heating space in which the heating device is accommodated and heated, and prevents the fiber reinforced thermoplastic composite material from being oxidized in the heating space. In order to supply the nitrogen to the heating space may further include a nitrogen supply.

The fiber inlet may be disposed at a portion where the resin composition supplied to the melting space is melted and transferred in the form of a melt.

The molding apparatus of the fiber-reinforced thermoplastic composite material according to the present invention for achieving the above object is an extruder having a housing provided with a melting space and a discharge port, a kneading machine having a main body provided with a kneading space and a discharge port, A cutting device disposed downstream of the kneading machine for cutting the fiber reinforced thermoplastic composite material discharged through the outlet, and disposed downstream of the cutting device for heating the fiber reinforced thermoplastic composite material cut by the cutting device. And a shaping device disposed downstream from the heating device for shaping the fiber-reinforced thermoplastic composite material heated in the heating device into a predetermined form. The extruder kneads the resin inlet provided in the housing to inject the resin composition into the melting space, a heater for heating the resin composition introduced into the melting space, and kneads the resin composition introduced into the melting space to the outlet. In order to have a kneading means installed in the melting space. The kneading machine is a resin melt supply port provided in the main body for supplying the resin melt discharged from the outlet to the kneading space, a fiber inlet provided in the main body for supplying reinforcing fibers to the kneading space, the kneading space introduced into the kneading space It has a kneading means installed in the kneading space for kneading the resin melt and the reinforcing fiber to the discharge port.

The molding method of the fiber-reinforced thermoplastic composite material according to the present invention for achieving the above object, (a) supplies a resin composition selected from the group consisting of a thermoplastic resin and a mixture thereof reinforced with a thermoplastic resin and a reinforcing fiber upstream of the extruder And conveying the resin composition toward the outlet of the extruder while melting and kneading, (b) feeding a reinforcing fiber downstream of the extruder and kneading with the molten resin composition, (c) the molten resin composition And continuously discharging the fiber-reinforced thermoplastic composite material kneaded with the reinforcing fiber through the outlet, (d) cutting the fiber-reinforced thermoplastic composite material continuously discharged through the outlet, to a predetermined length, (e) ) Heating the cut fiber reinforced thermoplastic composite material, (f) the heated fiber steel Shaping the thermoplastic composite into a predetermined form.

Forming method of the fiber-reinforced thermoplastic composite material according to the present invention may further comprise the step of making the thickness of the fiber-reinforced thermoplastic composite material discharged to the outlet after the step (c).

The step (e) may include supplying nitrogen to the space where the fiber-reinforced thermoplastic composite material is heated.

The molded article of the fiber-reinforced thermoplastic composite material according to the present invention for achieving the above object is characterized in that it is manufactured by the molding method as described above.

According to the present invention, a kneading step of kneading a resin composition and reinforcing fibers, a homogenizing step of making the thickness and cross-sectional shape of the fiber-reinforced thermoplastic composite material containing the reinforcing fibers in the resin composition uniform, and heating the fiber-reinforced thermoplastic composite material Since the heating step and the shaping step of shaping the heated fiber reinforced thermoplastic composite material into a predetermined shape are continuously performed in a series of molding processes, molded articles of the fiber reinforced thermoplastic composite material can be efficiently produced.

In addition, according to the present invention, by reducing the kneading time of the reinforcing fibers, it is possible to greatly reduce the breakage of the reinforcing fibers due to the impact of the reinforcing fibers and kneading means such as screws. Therefore, it is possible to produce a fiber-reinforced thermoplastic composite material and a molded article using the same, including a sufficiently long reinforcing fiber is maximized physical properties reinforcement effect by the reinforcing fiber.

1 is a conceptual diagram showing a molding apparatus of a fiber-reinforced thermoplastic composite material according to an embodiment of the present invention.

2 and 3 illustrate a process of shaping the fiber-reinforced thermoplastic composite material in the form of a sheet with a mold provided in the apparatus for forming a fiber-reinforced thermoplastic composite material according to one embodiment of the present invention.

Figure 4 shows a molded article of the fiber-reinforced thermoplastic composite material shaped by a mold provided in the molding apparatus of the fiber-reinforced thermoplastic composite material according to an embodiment of the present invention.

Figure 5 shows a process of manufacturing a fiber-reinforced thermoplastic molded article by compressing the fiber-reinforced thermoplastic composite material with a mold provided in the molding apparatus of the fiber-reinforced thermoplastic composite material according to an embodiment of the present invention.

6 is a conceptual diagram illustrating a molding apparatus of a fiber reinforced thermoplastic composite material according to another embodiment of the present invention.

100: forming apparatus 110: extruder

111 housing 112 melt space

113: heater 114: outlet

116: resin inlet 118: fiber inlet

120: screw 130: die

135: cutting device 140: heating device

141: heating space 150: nitrogen supply

160: shaping device 161, 162: mold

162: lower mold 163: upper mold

164, 167: first and second forming protrusions 165, 166: first and second forming grooves

170: controller

Hereinafter, a molding apparatus, a molding method, and a molded article using the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. These terms should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention based on the contents throughout the specification.

As shown in Figure 1, the molding apparatus 100 of the fiber-reinforced thermoplastic composite material according to an embodiment of the present invention is discharged from the extruder 110, the extruder 110 for kneading the resin composition and the reinforcing fibers Die 130, which makes the thickness of the fiber-reinforced thermoplastic composite material 10 uniform, the heating device 140, the heating device 140 for heating the fiber-reinforced thermoplastic composite material 10 passed through the die 130 It includes a shaping device 160 for shaping the fiber-reinforced thermoplastic composite material 10 that has passed through in a predetermined form, and a controller 170 for controlling the operation of each process device constituting the molding device 100. Each of these process apparatuses is arranged in order so that the kneading process, the homogenizing process, the heating process, and the shaping process can form a series of molding processes. And each process apparatus is connected with the conveying means which can convey the fiber reinforced thermoplastic composite material 10, such as a conveyor.

Here, the resin composition may be selected from the group consisting of thermoplastic resins reinforced with thermoplastic resins or reinforcing fibers and mixtures thereof. This resin composition may be supplied to the extruder 110 in the form of pellets. As the thermoplastic resin of the resin composition, a polyolefin resin, a polyamide resin, a polypropylene resin, a polyethylene resin, a polyester resin, a polyphenylene sulfide resin, a mixture of these resins, and the like can be used. And reinforcing fibers include natural fiber, glass fiber, carbon fiber, graphite fiber, metal fiber, aramid fiber, ultra high molecular weight polyethylene (PE), pan (polyacrylonitrile) fiber, arylene fiber, PEEK (poly ether ether ketone) ) Fibers, rayon fibers, basalt fibers or a mixture of these fibers and the like can be used.

The extruder 110 is melted to knead the resin composition, a housing 111 having a melting space 112 in which the resin composition is melted, a heater 113 for heating the resin composition supplied to the melting space 112, and a resin composition. It includes a screw 120 installed in the space 112. The heater 113 is disposed on the outer circumferential surface of the housing 111 and supplies heat to the melting space 112 to melt the resin composition introduced into the melting space 112. The screw 120 kneads the resin composition while transferring the resin composition introduced into the melting space 112 toward the discharge port 114 provided at one end of the housing 111. The resin composition introduced into the melting space 112 is melted and kneaded while being transferred toward the outlet 114 by the screw 120.

The resin supply hopper 115 for supplying a resin composition is provided in the upstream of the housing 111. The resin supply hopper 115 is connected to the melting space 112 through the resin inlet 116 formed in the upper portion of the housing 111. And the fiber supply hopper 117 for supplying the reinforcing fiber is coupled to the downstream side of the housing 111 adjacent to the outlet 114. The fiber supply hopper 117 is connected to the melting space 112 through the fiber inlet 118 formed on the upper portion of the housing 111.

As such, the molding apparatus 100 of the fiber-reinforced thermoplastic composite material according to the embodiment of the present invention may reduce the amount of collision between the reinforcing fibers and the screw 120 because the reinforcing fibers are injected downstream of the melting space 112. It can reduce the breakage of reinforcing fibers.

In addition, when the reinforcing fibers are supplied from the downstream side of the melting space 112 in which the resin composition is present in the molten state, it is possible to prevent the collision between the reinforcing fibers and the resin composition supplied in the form of pellets, and the resin melt is reinforced with the reinforcing fibers and the screw 120. It acts as a shock absorber to prevent the collision of reinforcing fibers can be further reduced. Therefore, the fiber-reinforced thermoplastic composite material 10 discharged through the outlet 114 disposed downstream of the extruder 110 may include sufficiently long reinforcing fibers, thereby improving the physical properties reinforcing effect by the reinforcing fibers. .

The screw 120 includes a rotation shaft 121 and a blade 122 provided helically along the outer circumferential surface of the rotation shaft 121. The rotating shaft 121 is rotated by the drive source 125 installed outside the housing 111. The screw 120 is transferred to the outlet 114 while kneading the resin composition and the reinforcing fiber introduced into the melting space 112. The drive source 125 is controlled by the controller 170.

In the present invention, the power transmission structure for rotating the screw 120 may be changed to various structures capable of rotating a conventional shaft in addition to the illustrated. And the screw 120 may be changed to the kneading means of the other structure that can be transported while kneading the resin composition and the reinforcing fibers.

As the molten resin composition and the reinforcing fibers are kneaded, the fiber-reinforced thermoplastic composite material 10 in the melt state made on the downstream side of the melting space 112 is continuously discharged through the outlet 114 of the extruder 110 to be die 130. Is transferred to. The die 130 controls the thickness and shape of the fiber reinforced thermoplastic composite 10 discharged through the outlet 114. In addition, the die 130 serves to improve the density of the fiber-reinforced thermoplastic composite material 10. According to the shape of the die 130, the fiber-reinforced thermoplastic composite material 10 passing through the die 130 has a uniform cross-sectional shape in various shapes such as circular, elliptical, and polygonal.

Fiber-reinforced thermoplastic composite 10 passing through die 130 is continuously conveyed toward heating device 140. A cutting device 135 is disposed between the die 130 and the heating device 140 to divide the length of the continuously reinforced fiber reinforced thermoplastic composite material 10 into a predetermined length. The fiber reinforced thermoplastic composite material 10 cut to a certain length by the cutting device 135 is transferred into the heating device 140.

The heating device 140 heats the fiber reinforced thermoplastic composite 10 to a semi-melt state before the fiber reinforced thermoplastic composite 10 is supplied to the shaping device 160. The heating of the fiber reinforced thermoplastic composite material 10 is to enable the fiber reinforced thermoplastic composite material 10 to be smoothly deformed into a predetermined shape by the shaping device 160.

The heating device 140 includes a heating space 141 for receiving and heating the fiber-reinforced thermoplastic composite material 10, an inlet 142, an outlet 143, and a nitrogen supply port 144 connected to the heating space 141. Include. While the fiber-reinforced thermoplastic composite 10 is heated while passing through the heating space 141, the nitrogen supplier 150 supplies nitrogen (N 2) to the heating space 141 through the nitrogen supply port 144. The nitrogen supply is to prevent oxidation of the fiber reinforced thermoplastic composite 10 that is heated.

The shaping device 160 shapes the fiber-reinforced thermoplastic composite material 10 in a semi-molten state heated by the heating device 140 into a predetermined shape. The shaping device 160 includes a mold 161 for shaping the fiber-reinforced thermoplastic composite material 10 into a predetermined form. The mold 161 may be provided in various forms, and the fiber-reinforced thermoplastic composite material 10 may be processed in various forms according to the shape of the mold 161.

2 shows an example of a mold provided in the shaping device 160 for processing the fiber-reinforced thermoplastic composite material 10 into a sheet form. The illustrated mold 161 includes a lower mold 162 and an upper mold 163 for compressing the fiber reinforced thermoplastic composite material 10 into a sheet form. The upper surface of the lower mold 162 is provided with a plurality of first forming grooves 165 provided between the plurality of first forming protrusions 164 and the plurality of first forming protrusions 164. In addition, the lower surface of the upper mold 163 may include a plurality of second molding grooves 166 that may accommodate the plurality of first molding protrusions 164 and a plurality of agents that may be accommodated in the plurality of first molding grooves 165. 2 forming projections 167 are provided.

After the fiber-reinforced thermoplastic composite material 10 is supplied to the upper surface of the lower mold 162, as shown in FIG. 3, when the upper mold 163 is lowered, the fiber-reinforced thermoplastic composite material 10 is lower mold 162. And it is compressed in the form of a sheet between the upper mold (163). When the thus-formed fiber-reinforced thermoplastic composite material 10 is separated from the mold 162 and cooled, an uneven reinforcement sheet 20 having a plurality of uneven parts 21 is formed as shown in FIG. 4. The uneven reinforcement sheet 20 may be introduced into another resin panel to improve the strength of the resin panel.

Meanwhile, as shown in FIG. 5, the fiber-reinforced thermoplastic composite material 10 and the reinforcement 30 are laminated between the lower mold 162 and the upper mold 163 of the shaping device 160 and the lower mold ( 162 and the upper mold 163 can be made into a fiber-reinforced thermoplastic molded article interposed between the reinforcement 30 in the middle. Such a reinforcement 30 includes a prepreg impregnated with a thermoplastic resin, a sheet woven using a prepreg impregnated with a thermoplastic resin, a sheet filled with a thermoplastic resin, a sheet woven with a reinforced fiber, and the like. , A sheet containing reinforcing fibers, a mixture of reinforcing fibers and a thermoplastic resin, and the like may be used. Since the reinforcement itself is an example of the above known details thereof will be omitted. However, a little more about the mixture of reinforcing fibers and thermoplastic resins are as follows. Mixtures of reinforcing fibers and thermoplastic resins mixed in various methods and forms may be used, for example, those in which a thermoplastic powder is sprayed onto the reinforcing fibers. In this case, it is advantageous for molding and reinforcement that the particle size of the thermoplastic resin powder is about 1,000 μm or less. The reinforcement 30 is preferably introduced into the shaping device 160 in a preheated state.

The reinforcement 30 may be located between the fiber-reinforced thermoplastic composites 10 as shown in FIG. 5, and may be located on the top or bottom of the fiber-reinforced thermoplastic composites 10, although not shown. Can be stacked.

In addition to the illustrated, various types of molds may be used to produce various types of fiber-reinforced thermoplastic molded articles. The molded article produced may itself be a final product or may be a product used as an intermediate.

Figure 6 shows a molding apparatus of a fiber-reinforced thermoplastic composite material according to another embodiment of the present invention.

The apparatus 200 for forming a fiber-reinforced thermoplastic composite material shown in FIG. 6 has the same configuration as that of the apparatus 100 for forming a fiber-reinforced thermoplastic composite material shown in FIG. 1, except that the reinforcing fibers are extruder 110 ′. It is supplied to the kneader 210 provided separately without being supplied to the kneading and kneaded with the resin melt. The die 130, the cutting device 135, the heating device 140, the shaping device 160, etc. of the molding apparatus 200 of the fiber-reinforced thermoplastic composite material according to the present embodiment are the same as those shown in FIG. Detailed description thereof will be omitted. Each of these process units are arranged in sequence so that the kneading process, homogenizing process, heating process, and shaping process can form a series of forming processes, and each process unit is conveyed to transfer the fiber-reinforced thermoplastic composite material 10 such as a conveyor. Connected by means.

The extruder 110 ′ melts and kneads the resin composition to discharge the resin melt through the outlet 114. The kneader 210 includes a body 211 having a kneading space 212 in which a resin melt and reinforcing fibers are mixed together. The main body 211 is provided with a resin melt supply port 213 through which a resin melt is supplied, a fiber inlet 218 for supplying reinforcing fibers, and a fiber supply hopper 217. The kneading space 212 is provided with a screw 220 for conveying while kneading the resin melt and reinforcing fibers. The screw 220 rotates by the drive source 230. The fiber-reinforced thermoplastic composite material 10 in the melt state made in the kneading space 212 is discharged through the discharge port 214 of the kneader 210 and moved to the die 130. The process after die 130 is as described above.

As described above, in the molding apparatus of the fiber reinforced thermoplastic composite material according to the embodiment of the present invention, the kneading process of kneading the resin composition and the reinforcing fiber, the thickness and cross section of the fiber reinforced thermoplastic composite material 10 impregnated with the reinforcing fiber in the resin composition The uniformity process of making shape uniform, the heating process of heating the fiber reinforced thermoplastic composite material 10 so that it may become a semi-melt state, and the shaping process of compressing and shaping the fiber reinforced thermoplastic composite material 10 of semi-melt state to a certain shape, Since it is performed continuously in a series of molding processes, it is possible to efficiently produce a molded article of the fiber-reinforced thermoplastic composite material (10).

In addition, the molding apparatus of the fiber-reinforced thermoplastic composite material according to the embodiment of the present invention can reduce the kneading time of the reinforcing fibers, it is possible to greatly reduce the breakage of the reinforcing fibers due to the impact of the reinforcing fibers and kneading means such as screws. Therefore, it is possible to produce a fiber-reinforced thermoplastic composite material 10 and a molded article using the same, including a sufficiently long reinforcing fiber is maximized the physical properties reinforcement effect by the reinforcing fiber.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims

A housing having a melting space, an outlet provided at one end of the housing, a resin inlet provided upstream of the housing for feeding the resin composition into the melting space, and a fiber provided downstream of the housing for feeding reinforcing fibers into the melting space An extruder having an inlet, a heater for heating the resin composition introduced into the melting space, a kneading means installed in the melting space for kneading the resin composition and the reinforcing fibers introduced into the melting space and transporting the reinforcing fibers to the outlet;

A cutting device disposed downstream of the extruder for cutting the fiber-reinforced thermoplastic composite material which is made in the melting space and continuously discharged through the outlet;

A heating device disposed downstream of the cutting device for heating the fiber reinforced thermoplastic composite material cut by the cutting device; And

And a shaping device disposed downstream of the heating device to shape the fiber-reinforced thermoplastic composite material heated in the heating device to a predetermined shape.
The method of claim 1,

And a die disposed between the extruder and the cutting device to equalize the thickness of the fiber reinforced thermoplastic composite material discharged through the outlet.
The method of claim 1,

The heating device has a heating space in which the fiber-reinforced thermoplastic composite material is accommodated and heated,

And a nitrogen supplyer for supplying nitrogen to the heating space to prevent the fiber reinforced thermoplastic composite material from being oxidized in the heating space.
The method of claim 1,

The fiber inlet is formed in the molding portion of the fiber-reinforced thermoplastic composite material, characterized in that the resin composition supplied to the melting space is disposed in the molten and conveyed in the form of a melt.
A housing having a melting space, an outlet provided at one end of the housing, a resin inlet provided in the housing for injecting the resin composition into the melting space, a heater for heating the resin composition introduced into the melting space, and introduced into the melting space An extruder having kneading means installed in said melting space for kneading said resin composition and conveying it to said outlet;

A main body having a kneading space, a discharge port provided at one end of the main body, a resin melt supply port provided in the main body for supplying the resin melt discharged from the discharge port to the kneading space, to supply the reinforcing fiber to the kneading space A kneader having a fiber inlet provided in the main body, a kneading means installed in the kneading space for kneading the resin melt and the reinforcing fiber introduced into the kneading space to the discharge port;

A cutting device disposed downstream of the kneader to cut the fiber-reinforced thermoplastic composite material that is made in the kneading space and discharged through the discharge port;

A heating device disposed downstream of the cutting device for heating the fiber reinforced thermoplastic composite material cut by the cutting device; And

And a shaping device disposed downstream of the heating device to shape the fiber-reinforced thermoplastic composite material heated in the heating device to a predetermined shape.
The method of claim 5,

And a die disposed between the kneader and the cutting device so as to uniform the thickness of the fiber reinforced thermoplastic composite material discharged through the discharge port.
The method of claim 5,

The heating device has a heating space in which the fiber-reinforced thermoplastic composite material is accommodated and heated,

And a nitrogen supplyer for supplying nitrogen to the heating space to prevent the fiber reinforced thermoplastic composite material from being oxidized in the heating space.
(a) feeding a resin composition selected from the group consisting of a thermoplastic resin and a thermoplastic resin reinforced with a reinforcing fiber and a mixture thereof upstream of the extruder, and conveying the resin composition toward an outlet of the extruder while melting and kneading;

(b) feeding the reinforcing fibers downstream of the extruder to knead with the molten resin composition;

(c) continuously discharging the melted resin composition and the fiber-reinforced thermoplastic composite material in which the reinforcing fibers are kneaded through the outlet;

(d) cutting the fiber-reinforced thermoplastic composite material continuously discharged through the outlet to a predetermined length;

(e) heating the cut fiber reinforced thermoplastic composite; And

(f) shaping the heated fiber reinforced thermoplastic composite material into a predetermined form.
The method of claim 8,

And forming a uniform thickness of the fiber-reinforced thermoplastic composite material discharged to the outlet after the step (c).
The method of claim 8,

The step (e) comprises the step of supplying nitrogen to the space where the fiber-reinforced thermoplastic composite material is heated, the molding method of the fiber-reinforced thermoplastic composite material.
The method of claim 8,

The step (f) is a method of forming a fiber-reinforced thermoplastic composite material, characterized in that the fiber-reinforced thermoplastic composite material is added to the reinforcement to form a predetermined shape.
The method of claim 11,

The reinforcing material is a prepreg impregnated with a thermoplastic resin, a sheet woven using a prepreg impregnated with a thermoplastic resin, a sheet filled with a thermoplastic resin, a sheet woven with a reinforcing fiber, reinforcing fiber The method of forming a composite material, characterized in that the mixture is selected from a mixture of a sheet, a reinforcing fiber and a thermoplastic resin.
The method of claim 11,

The method of forming a composite material, characterized in that the reinforcement is added in a pre-heated state.
(1) supplying an extruder a resin composition selected from the group consisting of thermoplastic resins reinforced with thermoplastic resins and reinforcing fibers, and mixtures thereof, and transferring the resin composition toward the outlet of the extruder while melting and kneading the resin composition;

(2) supplying reinforcing fibers to the kneader and kneading the molten resin composition and the reinforcing fibers supplied from the outlet of the extruder in the kneader;

(3) continuously discharging the melted resin composition and the fiber-reinforced thermoplastic composite material in which the reinforcing fibers are kneaded through an outlet of the kneader;

(4) cutting the fiber-reinforced thermoplastic composite material continuously discharged through the discharge hole to a predetermined length;

(5) heating the cut fiber reinforced thermoplastic composite material; And

(6) shaping the heated fiber reinforced thermoplastic composite material into a predetermined form.
The method of claim 13,

And forming a uniform thickness of the fiber-reinforced thermoplastic composite material discharged to the discharge hole after the step (3).
The method of claim 13,

Step (5) is a method of forming a fiber-reinforced thermoplastic composite material, characterized in that it comprises the step of supplying nitrogen to the space where the fiber-reinforced thermoplastic composite material is heated.
The method of claim 13,

Step (6) is a method of forming a fiber-reinforced thermoplastic composite material, characterized in that the reinforcement with the fiber-reinforced thermoplastic composite material to form a predetermined shape.
The method of claim 17,

The reinforcing material is a prepreg impregnated with a thermoplastic resin, a sheet woven using a prepreg impregnated with a thermoplastic resin, a sheet filled with a thermoplastic resin, a sheet woven with a reinforcing fiber, reinforcing fiber The method of forming a composite material, characterized in that the mixture is selected from a mixture of a sheet, a reinforcing fiber and a thermoplastic resin.
The method of claim 17,

The method of forming a composite material, characterized in that the reinforcement is added in a pre-heated state.
A molded article of a fiber-reinforced thermoplastic composite material, which is produced by the molding method according to any one of claims 8 to 19.