KR20160115329A - Web forming method using the carbon fiber, apparatus, and method for manufacturing a carbon fiber reinforced plastic using the same - Google Patents

Abstract

The present invention relates to a carbon fiber web forming method, a carbon fiber web forming apparatus, and a method for manufacturing carbon fiber reinforced plastic using the same that are economical because a web is formed by the minimum use of carbon and reinforced fiber required for desired carbon fiber reinforced plastic. The web forming method includes: a step in which a fiber selected from the group consisting of carbon fiber, glass fiber, aramid fiber, Kevlar fiber, and a mixture thereof is cut to a uniform size; a step in which air is injected to the cut fiber through an air supply unit and the cut fiber is moved to a web forming unit along with the injected air; and a step in which the air flows out through an air discharge port in a lower portion of the web forming unit and a web is formed by the fiber being stacked on a desired web-shaped mesh net in the web forming unit.

Description

TECHNICAL FIELD The present invention relates to a method of forming a carbon fiber web, an apparatus and a method of manufacturing a carbon fiber-reinforced plastic using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for forming a carbon fiber web, and a method of manufacturing a carbon fiber-reinforced plastic using the same. More particularly, the present invention relates to a carbon fiber- The present invention relates to an economical carbon fiber web forming method and apparatus by forming a web, and a manufacturing method of carbon fiber reinforced plastic using the same.

FIG. 1 is a view for explaining a process of an autoclave for producing carbon fiber-reinforced plastic using conventional carbon fibers. As shown in Fig. 1, in order to produce a carbon fiber reinforced plastic (CFRP) which is commonly used, a prepreg is prepared by preliminarily impregnating a carbon fiber with a matrix resin to form a prepreg , The cut prepregs are stacked, and the subsidiary materials are stacked on the stacked prepregs. Next, the prepreg and the auxiliary material are bagged, the bagged prepreg and the auxiliary material are inserted into the sealed container and heated to generate steam, and the vapor pressure state is controlled by an autoclave The reaction product is subjected to a shaping step to remove the reacted substance from the autoclave, and then to flatten the product using trimming.

2 is a view for explaining a process of a precoated metal press for producing carbon fiber-reinforced plastic using conventional carbon fibers. As shown in Fig. 2, in order to produce carbon fiber reinforced plastic (CFRP) which is commonly used, first, a prepreg for preforming a carbon fiber by impregnation with a matrix resin is cut, (Prefabricated by a chemical vapor deposition (CVD) method) to produce a rod having a refractive index distribution resembling a target fiber, and is manufactured through press molding and demolding.

The scrap from the above processes is incapable of being reused, so that almost all scrap has to be disposed. The above problem has recently been solved by applying carbon fiber reinforced plastic using carbon fibers having a capacity of about 3 to 40 thousand won / kg to various fields for economical reasons And it becomes difficult to make it.

In addition, apart from the above processes, a carbon fiber is short cut to 50 to 100 mm, and a web is formed through carding which combines with the thermoplastic resin to form entangled fibers, The rigidity of the thermoplastic resin mixed with the carbon fibers is lower than that of the carbon fibers and the rigidity of the carbon fiber reinforced plastic to be produced is lower than that of the carbon fiber reinforced plastic using only carbon fibers A phenomenon occurs.

Although the technique of carding only carbon fibers is tested in various fields, carding is not smooth due to the fact that the carbon fibers required for carding can not be given to the carbon fibers (wavy bends of natural and artificial fibers) There is a problem that the loss of fibers is considerably large.

The carbon fiber-reinforced plastic is widely applied to airplanes, spacecraft, and the like, and researches for application to the automobile field have been actively carried out. The technology for reusing scrap generated during the research process and the carbon fiber- There is a demand for a technique capable of manufacturing reinforced plastic.

An object of the present invention is to provide an economical carbon fiber-reinforced plastic by minimizing the loss of fibers in forming a web using carbon and reinforcing fibers.

In order to accomplish the above object, the present invention provides a method of manufacturing a carbon fiber composite material, comprising: cutting a fiber selected from the group consisting of carbon fiber, glass fiber, aramid fiber, Kevlar fiber and mixture thereof into a uniform size; Jetting air through the air supply to the cut fibers, and moving the cut fibers to the web formation with the jetted air; And a step of forming a web by stacking the fibers and the air in the air in an air outflow port located at a lower portion of the web forming unit and the fibers are stacked on a mesh network of a desired web shape located in the web forming unit, Lt; / RTI >

The web forming method according to the present invention is advantageous in that the loss of carbon and reinforcing fibers is minimized by forming the web according to the shape of the end product of the user.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining a process of an autoclave for producing a carbon fiber-reinforced plastic using ordinary carbon fibers. FIG.
2 is a view for explaining a process of a precoated metal press for producing carbon fiber-reinforced plastic using ordinary carbon fibers.
3 is a block diagram illustrating a procedure of a web forming method according to the present invention.
4 is a view for explaining a web forming method according to the present invention.
5 is an enlarged view of a portion of a donor portion of a web forming method according to the present invention.
FIG. 6 is an enlarged view of a raw material placing portion in a web forming method according to the present invention. FIG.
FIG. 7 is an enlarged view of a web forming part showing an example of a web forming method according to the present invention; FIG.
FIG. 8 is an enlarged view of a web forming part showing another example of a web forming method according to the present invention; FIG.
9 is a view for explaining an example of a web forming process according to the present invention.
10 is a view for explaining another example of a web forming process according to the present invention.
11 is a block diagram showing a procedure of a method of manufacturing a carbon fiber-reinforced plastic according to the present invention.
12 is a view for explaining binding of a web formed by a web forming method according to the present invention by using a needle punching method;

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 3 is a block diagram showing a procedure of a web forming method according to the present invention, and FIG. 4 is a view for explaining a web forming method according to the present invention. As shown in FIGS. 3 and 4, the web forming method according to the present invention includes cutting a fiber in a uniform size (S10), moving a predetermined amount of cut fiber by moving a doffer and air (S20) And a step (S30) in which the transferred fibers are laminated on a mesh network of a desired web form to form a web.

The step S10 of cutting the fibers into the uniform size is a step of cutting the fiber according to the characteristics of the web desired by the user into a size suitable for the characteristics of the web desired by the user, Fig. 4 is an enlarged view of a portion of the method.

The fiber refers to a super fiber such as carbon fiber, glass fiber or aramid fiber, preferably carbon fiber and glass fiber. Here, the superfiber means a fiber having properties of high strength and high elasticity equal to or more than that of a metal. The size of the cut fibers 404 is 10 to 150 mm, preferably 15 to 140 mm, more preferably 20 to 130 mm. If the size of the cut fibers 404 is less than 10 mm, the fibers may not be laminated to a mesh mesh, which will be described later. When the cut fibers 40 are longer than 150 mm, You may not be able to form a web.

The cut fibers 404 are moved through a step of moving a predetermined amount by the movement of the doffer and the air (S20).

The doffer 408 is a device for supplying first fibers and air fibers 440 cut by the air moving path 412 to the first fiber and the air moving path 412, The content of the inorganic filler 404 may be appropriately set according to the shape of the target web, but is preferably 1 to 100 g / sec, and more preferably 5 to 90 g / sec. If the amount of fibers supplied to the first fiber and the air moving pipe 412 is too small, it may take a long time to form a web, and if it is too much, the fibers may not move smoothly.

The first fiber and air moving pipe 412 may be a duct, a duct, or the like, and is preferably a duct. The method of moving the fiber is an air-laid technique, Is moved to the air outlet 448 by the air that is introduced from the air supply 410. [ One end of the first fiber and the air moving pipe 412 is connected to the doffer 408. The rate at which the air is introduced may be suitably set according to the type of the desired web, the type and content of the fiber to be fed, and the like, for example, when the content of fibers is large, the mixture is sprayed quickly, and when the content is small, particles are sprayed slowly. Here, the air-laid technique is a method in which fibers are dispersed in air and then collected on a metal net to form a sheet.

The fibers that have been subjected to the step S20 of moving a predetermined amount of the cut fibers 404 by the movement of the doffer and the air may be classified into a step S22 of arranging the fibers in a primary order using the raw material delivering unit 414, (S24) of moving the fiber to the web forming space by the movement of the air.

The step S22 of arranging the fibers in a primary order using the raw material discharging unit 414 is a step of primarily arranging the fibers moved through the first fiber and the air moving pipe 412, And an arrangement heat exchanger 414.

FIG. 6 is an enlarged view of a raw material placing part in a web forming method according to the present invention. The raw material discharge unit 414 serves to arrange the fibers primarily before the fibers form a desired web. The first fiber and the air inlet 416, the fiber array unit 420, 1 fiber and an air outlet 424.

The first fiber and air inlet 416 are connected to the other end of the first fiber and the air moving pipe 412 to move a predetermined amount of the cut fiber by the movement of the doffer and the air, Where the fibers are introduced, it is not necessary to position the fibers if they can be inflowed. Preferably, the fiber is located at the top of the raw material discharging unit 414 and has a diameter of 5 to 30 cm. If the diameters of the first fibers and the air inlet are too small, the fibers may not move smoothly. If the diameters are too large, it may be difficult to arrange the fibers first.

The fiber arranging space 420 serves to primarily arrange the fibers introduced through the first fiber and the air inlet 416. The fibers arranged in the fiber arranging space 420 are dispersed, And then rearranged by moving again. Is larger than the diameter of the first fiber and the air inlet 416 and has a space, but is spherical in shape, preferably having a diameter of 0.2 to 2 m. If the diameter of the fiber arrangement space 420 is too small, it may be difficult to arrange the fibers. If the fiber arrangement space 420 is too large, the number of fibers to be arranged increases, which may make it difficult to form a desired web.

The first fibers and the air outlet 424 are provided for discharging the fibers arranged in the fiber arrangement space 420. The first fibers and the air outlet 414 are not in a positional relationship when facing the first fibers and the air inlet 416, Is located at the bottom of the fiber arrangement space 420 and has a diameter of 5 to 30 cm. If the diameters of the first fibers and the air outlet 424 are too small, the arranged fibers may not move smoothly. If the diameters are too large, it may be difficult to arrange the fibers in the fiber arrangement space 420.

The fibers introduced through the first fibers of the raw material delivering unit 414 and the air inlet 416 have a larger volume of the fiber arranging space 420 of the raw material delivering unit 414 than the moving pipe, The principle in which the fibers are arranged and the content of the fibers arranged in the raw material delivering unit 414 may be appropriately selected depending on the type of the desired web.

The primary arranged fibers having been subjected to the above steps are moved to the web forming unit 444 by the movement of air (S24). The fibers flowing out of the first fiber and the air outlet 424 pass through the second fiber and the air moving pipe 428 and are moved to the web forming part 444.

The fibers moved through the above step are stacked on the mesh network of the desired web type to form the web (S30). The step S30 of stacking the transferred fibers on a mesh network of a desired web form to form a web includes a web forming unit.

7 is an enlarged view of a web forming part showing an example of a web forming method according to the present invention. As shown in FIG. 7, the web forming part 444 forms a web by laminating the fibers that have been primarily arranged in a mesh network of a desired web shape. The web forming part 444 includes a second fiber and an air inlet 432, A mesh network 440 and an air outlet 448. [

The second fiber and the air inlet 432 are connected to the other end of the second fiber and the air moving pipe 428 to receive the fibers arranged in the first order. Preferably located above the web forming portion 444, and has a diameter of 5 to 30 cm. If the diameters of the second fibers and the air inlet 432 are out of the range, a web may not be formed in a desired form. The web forming unit 444 may be appropriately selected in a larger form than the desired web depending on the type of the desired web, and is preferably in the form of a cylinder.

The mesh net 440 is a layer where fibers are stacked to form a web and is stacked in the form of a web of a desired shape, for example, a V-shape, a T-shape, a triangle, And the mesh network 440 is located along the inner circumferential surface of the air outlet 448. [ The mesh network 904 may be made of a material such as stainless steel, aluminum, and oxidation-resistant iron. The mesh net 904 has a size of 3 to 60 mesh, preferably 5 to 50 mesh. If the size of the mesh net 904 is too small, it may be difficult to form a uniformly laminated web, and if it is too large, the fibers may not be stacked and may be discharged.

The air outlet 448 is a lower portion of the web forming portion 444 through which the air introduced from the air supplying portion 410 flows and the speed, And can be set appropriately according to the form. By controlling the speed of the air flowing out to the air outlet 448, the unit and weight of the web to be laminated to the mesh net, that is, the formed web, can be controlled.

8 is an enlarged view of a web forming part showing another example of the web forming method according to the present invention. 8, another example of the web forming method according to the present invention includes a rotating plate 812 at a lower portion of the web forming portions 804 and 808, and is provided with a doffer, first and second fibers, , A raw material loading unit and a web forming unit are further provided, respectively, as described in the example of the above-described web forming method.

The rotating plate 812 includes a mesh net and an air outlet in which two or more, preferably two to six, more preferably three to four, fibers are laminated. For example, when the first web forming unit 804 is connected to the first mesh network 816, the fibers introduced into the first web forming unit 804 are stacked on the first mesh net 816, The first mesh net 816 and the first mesh net 816 are connected to each other by the first mesh net 816 and the first mesh net 816. When the fibers of the weight set in the first mesh net 816 are stacked, And the first web forming unit 804 is connected to the second mesh network 824 and the second air outlet 828 to rotate the second mesh network 824 The fibers are laminated. When a certain amount of fibers are stacked on the first and second mesh nets 816 and 824, the rotating plate 812 rotates and the first mesh net 816, on which the fibers are stacked, And the first mesh net 816 from which the fibers are removed is rotated according to the rotation of the rotary plate 812 to repeat the above steps. The rotation speed of the rotation plate 812 may be set differently depending on the weight of the target web.

9 is a view for explaining an example of a web forming process according to the present invention. As shown in FIG. 9, the mesh network 904 is configured to allow the fibers 908 introduced through the fibers and air inlets to enter the desired web shape, e.g., V, T, triangle, And the like to form a web. The mesh network 904 is located along the inner circumferential surface of the air outlet 912. The fibers 908 moved to the upper portion of the mesh net 904 are continuously moved in the direction in which the air is moved (FIG. 9A) and are stacked, for example, When the fibers 916 are stacked on the mesh net 904, the air flow (air velocity) for moving the fibers 916 is lowered. Therefore, the fibers 911 are not stacked, and are moved to a place where the airflow (air velocity) is fast and stacked (Fig. 9 (b) and (c)). The fibers 908 are moved and uniformly stacked due to the difference of the airflows (air speeds) to form the desired web 920 (FIG. 9 (d)), So that loss of fibers can be minimized. The mesh network 904 may be a web format desired by the user, and may be modified or replaced according to the type of the desired web. The mesh network 904 may be made of a material such as stainless steel, aluminum, and oxidation-resistant iron. The mesh net 904 has a size of 3 to 60 mesh, preferably 5 to 50 mesh. If the size of the mesh net 904 is too small, it may be difficult to form a uniformly laminated web, and if it is too large, the fibers may not be stacked and may be discharged.

10 is a view for explaining another example of a web forming process according to the present invention. As shown in Fig. 10, another example of the web forming process includes four rotating plates 1004, 1008, 1012, and 1016 and hooks 1020. As shown in Fig. The rotating plates 1004, 1008, 1012 and 1016 each include one mesh network 1024, 1028, 1032 and 1036 and air outlets 1040, 1044, 1048 and 1052, The mesh networks 1024, 1028, 1032, and 1036 and the air outlets 1040, 1044, 1048, and 1052 are moved together. The mesh nets 1024, 1028, 1032 and 1036 are located along the inner circumferential surface of the air outlets 1040, 1044, 1048 and 1052 and the fibers 1056 introduced into the mesh nets 1024, 1028, 1032 and 1036 For example, a V shape, a T shape, a triangle shape, a " c " shape, or the like to form a web. Specifically, first, the rotating plates 1004, 1008, 1012, and 1016 including the mesh nets 1024, 1028, 1032, and 1036 and the air outlets 1040, 1044, 1048, and 1052 are positioned (a) Fibers and air are introduced into the first and second rotary plates 1004 and 1008 and stacked on the first and second mesh nets of the T type located at the first and second rotary plates 1004 and 1008, When the web 1060 is formed by laminating a predetermined amount, the rotary plates 1004, 1008, 1012, and 1016 rotate (b). Next, the fibers are stacked on the second and third rotating plates 1008 and 1012 by the rotation of the rotating plates 1004, 1008, 1012, and 1016, and when the webs 1060 are formed by laminating a certain amount of the fibers 1056, Rotate again (c). Next, the rotating plates 1004, 1008, 1012, and 1016 are rotated to form the web 1060 by laminating the fibers 1056 on the third and fourth rotating plates 1012 and 1016, and the four rotating plates 1004 , 1008, 1012, and 1016 are all formed with a web 1060 (d). Next, the webs 1060 formed on the mesh nets 1024, 1028, 1032, and 1036 of the second rotary plate 1008 are removed and moved by the claws 1020 while the third and fourth rotary plates 1012, 1016 are laminated with fibers 1056 to form a web 1060 (e). Next, the rotary plates 1004, 1008, 1012, and 1016 rotate again to repeat and form the web continuously. (See Fig. 9 for the process of forming the web by laminating the fibers on the mesh net)

The web manufacturing apparatus according to the present invention includes an air supply unit 410, a doffer 408, a first fiber and an air moving pipe 412, and a web forming unit 444, and the first fiber and air moving pipe 412 A second fiber and an air moving path 428 and a rotating plate 812 may be further provided between the first web forming unit 444 and the web forming unit 444. [

The air supply unit 410 serves to supply air to the doffer 408. The doffer 408 is located above the air supply unit and the fibers supplied from the side are supplied from the air supply unit 410 The air and the fibers are moved together using air. One end of the first fiber and the air moving pipe 412 is connected to the upper portion of the doffer 408 to serve as a passage through which the fiber and the air move.

The raw material discharge unit 414 has a first fiber and an air inlet 416 connected to the first fiber and the other end of the air moving pipe 412 at an upper portion thereof and the first fiber and the air inlet 416, And the fibers arranged in the raw material discharging unit 414 flow out from the lower part of the raw material discharging unit 414. In this case, Fiber and air outlets 424 are formed.

One end of the second fiber and the air moving pipe 428 is connected to the first fiber and the air outlet 424 formed in the lower portion of the raw material discharging unit 414 and is arranged in the raw material discharging unit 414 And serves as a passage through which the fibers and air move.

The web forming part 444 is connected to the second fiber and the other end of the air moving path 428 at an upper part thereof, and the second fiber and the second fiber, through which the fiber moving through the air moving path 428 flows, An air inlet 432 is formed. An air outlet 448 through which the air supplied from the air supply unit 410 flows is formed in the lower portion of the web forming unit 444 and an inner peripheral surface of the web forming unit 444, A mesh network of a desired web form is provided.

The rotating plate is located at a lower portion of the web forming portion and rotates when the desired amount of fibers are stacked on the mesh netting to separate the mesh netting from the web forming portion and connect the non- Thereby repeating the above operation.

Further, the web manufacturing apparatus according to the present invention may further include a needle punching device and a conveyor belt. The needle punching apparatus includes a needle for moving up and down and a control unit for allowing the needle to move up and down. The conveyor belt serves to pass the formed web through the needle punching device. The needle punching device may be one or more, preferably two or more, and when the needle punching device is two, the two needle punching devices may needle punch one surface and / or the other surface, The passing needle punching device is configured to roughly shape the web so as not to allow the web to fly, needle punching one side of the web, and then passing through the needle punching device, the other side of the web is punched It is completely combined.

11 is a block diagram showing a procedure of a method of manufacturing a carbon fiber-reinforced plastic according to the present invention. As shown in FIG. 11, the carbon fiber-reinforced plastic according to the present invention includes a step S110 of forming a web by laminating fibers (S110), a step S120 of bonding the web by needle punching the formed web, (S130) of processing the web by impregnation and press molding the web. Step S110 of forming a web by laminating the fibers is as described above in the web forming method.

In the step S120 of joining the web by needle punching the formed web, the fibers are stacked on the mesh network 440 of the desired web type, for example, stacked in a random arrangement to form a desired web, When the formed web is exposed to the air, the fibers piled up by the wind may be scattered. Therefore, after the web is formed, the step of joining the web may be performed by using a needle punching method ) And the like.

FIG. 12 is a view for explaining how a web formed by the web forming method according to the present invention is bonded using a needle punching method. 12, by passing the web 1104 formed by the web forming method according to the present invention through the needle punching process 1100, a needle 1124 (not shown) is formed on part of the arrangement of the fibers randomly stacked two- ) And combines them into a three-dimensional random structure. For example, in the needle punching process, the needle punching device can be one, preferably two or more, and when the needle punching device is two (1108, 1112), the formed web 1104 is moved along the conveyor belt, And passes through second needle punching apparatuses 1108 and 1112 to join the web. The first needle punching apparatus 1108 may be damaged because a portion of the web 1104 formed by the speed of the wind and the conveyor belt 1116 may fly during movement to the second needle punching apparatus 1112 The combined web 1120 may be transferred to the second needle punching apparatus 1112 and needle punched to produce the desired bonded web 1128. [ The number and arrangement intervals of the needles of the first and second needle punching devices 1108 and 1112 may vary depending on the desired product, and one or both sides of the combined web may be needle punched. For example, as the needles are densely arranged, the formed web becomes harder and harder, and as the spacing of the needles becomes larger, the degree of the formed web becomes less and the soft web can be formed.

The step (S130) of impregnating the bonded web with the resin and pressing the web to form a web is a step of fabricating the carbon fiber-reinforced plastic by processing the bonded web. The bonded web may be impregnated with a matrix resin in advance, for example, as a prepreg, and then press-formed to obtain a carbon fiber-reinforced plastic. In addition, the matrix resin may be laminated on the bonded web in the form of a film or the like instead of impregnating the matrix resin in advance, and the matrix resin may be impregnated by press molding to obtain a carbon fiber-reinforced plastic. Here, since the step of impregnating the matrix resin by press molding can reduce the number of steps, it can be said that it is advantageous in terms of cost reduction. The matrix resin is impregnated into the bonded web, and the matrix resin is formed into a film, a thermosetting resin such as thermally fused thermoplastic resin or epoxy, etc., and the matrix resin is melted after the sheet and the web are laminated A known method such as pressurization and impregnation may be used as needed. In this method, a known apparatus such as a double belt press machine or an intermittent press machine can be used. Examples of the matrix resin include thermoplastic and thermosetting resins such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polylactic acid (PLA) A thermosetting resin can be used.

The final objective of the carbon fiber reinforced plastic according to the present invention is to provide carbon fiber reinforced plastic parts for automobiles, lightweight rigid parts for airplanes, lightweight rigid parts for ships, damaged structural reinforcements, wind power blades, exercise equipment, musical instruments and bicycle frames Products.

The carbon fiber-reinforced plastic according to the present invention is economical because it forms a web having a shape similar to that of a desired carbon fiber-reinforced plastic and forms a carbon fiber-reinforced plastic by using the same.

Although the present invention has been described with reference to the drawings, the present invention is not limited to the above-described specific embodiments, and various modifications are possible within the scope of the following claims.

Claims (9)

Cutting a fiber selected from the group consisting of a carbon fiber, a glass fiber, an aramid fiber, a Kevlar fiber, and a mixture thereof into a uniform size;
Jetting air through the air supply to the cut fibers, and moving the cut fibers to the web formation with the jetted air; And
The web and the air are discharged to an air outlet located at a lower portion of the web forming unit, and the fibers are stacked on a mesh network of a desired web shape located in the web forming unit to form a web. Way. The web forming apparatus according to claim 1, wherein when the web is formed by stacking the fibers in the mesh net, the lower portion of the web forming unit rotates, And a mesh net in which no fibers are laminated is connected to the web forming portion to laminate the fibers, and the above process is continuously performed to form a web. The web forming method according to claim 1, wherein the thickness and weight of the web formed in the web forming portion are controlled by adjusting the speed of the air. The web forming method according to claim 1, further comprising a step of separating and re-agglomerating the cut fibers by a pressure difference between the step of moving the cut fibers and the step of forming the web, . A dope supplying fibers selected from the group consisting of carbon fibers, glass fibers, aramid fibers, and mixtures thereof; An air supply unit located at a lower portion of the doffer and supplying air to the doffer;
A first fiber and an air moving pipe connected at one end to the upper portion of the doffer to move the fiber and the air supplied from the air supply portion; And
A second air and fiber inlet connected to the first fiber and the other end of the air moving pipe to receive the moving fibers and air, a mesh network of a desired web on which the fibers introduced into the inlet are stacked, And a web forming portion including an air outlet through which the introduced air flows out. 6. The air conditioner according to claim 5, wherein between the first fiber and the air moving duct and the web forming unit, the other end of the first fiber and the air moving duct is connected to the upper portion so that the first air and the fiber inlet, A raw material container having a larger diameter and including an arrangement portion in which fibers are primarily arranged and a first air and a fiber outlet portion through which the arranged fibers are discharged downward; And
And a second fiber and an air moving pipe connected to the raw material arranging unit so that the fibers and air flowing out from the raw material discharging unit are moved and the other end is connected to the second air and fiber inlet of the web forming unit In, web manufacturing facility. [7] The apparatus of claim 5, wherein the lower portion of the web forming portion is connected to a rotating plate, the mesh net and the air outlet are located on a rotating plate located below the web forming portion, and when the fibers are stacked on the mesh netting, Wherein a mesh net in which fibers are stacked is detached from the web forming portion and a mesh net in which fibers are not stacked is connected to the web forming portion. Cutting a fiber selected from the group consisting of a carbon fiber, a glass fiber, an aramid fiber, a Kevlar fiber, and a mixture thereof into a uniform size;
Jetting air through the air supply to the cut fibers, and moving the cut fibers to the web formation with the jetted air;
Forming a web by depositing the fibers and the air in the air on an air outlet port located at a lower portion of the web forming unit and the fibers are stacked on a desired mesh network located in the web forming unit;
Joining the web by a needle punching method in which the formed web is passed through a needle punching apparatus which moves up and down; And
Impregnating the bonded web with a matrix resin, and heating and / or applying pressure to the web to thereby produce a web. The thermoplastic resin composition according to claim 8, wherein the matrix resin is a thermoplastic and / or thermosetting resin selected from the group consisting of polyethylene terephthalate, polyethylene, polypropylene, polylactic acid, epoxy, ≪ / RTI >

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