KR101316242B1 - Lightweight insulator and prepreg manufacturing method and manufacturing equipment for lightweight insulator - Google Patents

Abstract

PURPOSE: A lightweight insulating plate, and a method and an apparatus for manufacturing prepreg for lightweight insulating plate are provided to use a porous filter, thereby making the prepreg lightweight. CONSTITUTION: Matrix composition is prepared in a dipping bath (S1). The matrix composition includes adhesive resin and porous filler. The matrix composition is sprayed to glass cloth impregnated with the matrix composition (S2). Prepreg is manufactured by transferring the impregnated glass paper to a drying chamber (S3). [Reference numerals] (AA) Start; (S1) Step of preparing matrix composition in a dipping bath; (S2) Step of dipping glass cloth in the matrix composition and spraying the matrix composition to the glass cloth from a nozzle; (S3) Step of manufacturing prepreg by transferring the glass paper to a drying chamber

Description

LIGHTWEIGHT INSULATOR AND PREPREG MANUFACTURING METHOD AND MANUFACTURING EQUIPMENT FOR LIGHTWEIGHT INSULATOR}

The present invention relates to a method for manufacturing a lightweight insulating plate, a prepreg for a lightweight insulating plate, and an apparatus for manufacturing the same, and more particularly, to reduce the weight by using a porous filler. A manufacturing method of a lightweight insulating plate, a prepreg for lightweight insulating plates, and its manufacturing apparatus.

In general, the insulating plate is used to cut the electrical connection to the outside.

For example, insulating plates are used as covers for smartphones and tablet PCs, which are rapidly increasing in use in recent years. The smart phone and tablet PC are using a touch panel that operates by recognizing the current of the human body, and is used by mounting a cover to protect the outer surface of the touch panel and to block the electrical connection with the human body.

In the case of such a cover is generally manufactured by molding a synthetic resin, various kinds of fillers are used to improve physical properties. GFRP (Glass Fiber Reinforced Plastic) insulation plates have a specific gravity of 1.7 to 2.2, and CFRP (Carbon Fiber Reinforced Plastic) plates have a specific gravity of 1.6, and these insulation plates do not meet the taste of consumers who require lightweight. .

On the other hand, prepreg is a fiber-reinforced composite material produced by combining fiber and resin with a matrix composed mainly of resin.

Korean Patent Laid-Open Publication No. 110-2009-0101017 discloses a sandwich panel using a prepreg.

Specifically, the Patent Publication discloses a reinforcing material composed of a prepreg which is semi-cured by impregnating a resin in one direction or woven glass fiber.

However, in the case of the prepreg, only the content of the matrix composition consisting of 15 to 50 parts by weight of the resin and a predetermined amount of the solvent in the glass fiber is disclosed, and there is a problem in that it does not satisfy the conditions of the lightweight insulating plate.

If a low density filler is used to reduce the weight of the insulating plate, it is difficult to uniformly disperse it in the matrix composition, and the filler floats on top of the matrix composition of the impregnation bath. Therefore, there is a problem in that it is not uniformly distributed inside the glass fiber during impregnation, and causes a defect.

Republic of Korea Patent No. 10-0211227 (Insulation plate and manufacturing method thereof, notification date: 1999.07.15)

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to maintain the adhesive force even if stored for a predetermined time, the method of manufacturing a prepreg for lightweight insulating plates that can be reduced by using a porous filler and its It is to provide a manufacturing apparatus.

In addition, an object of the present invention is to solve the problem of floating to the top of the matrix composition when using a porous filler, a method of manufacturing a light insulating plate, a pre-preg for a light insulating plate and a manufacturing apparatus of the light insulating plate is uniformly distributed into the reinforcing member To provide.

In addition, an object of the present invention is to inject a composition to be injected into the reinforcing member indirect injection method, so that the bone is not formed in the reinforcing member, the method of manufacturing a lightweight insulating plate, a prepreg for a lightweight insulating plate, and its manufacturing apparatus that can maintain smoothness To provide.

In addition, an object of the present invention is to produce a prepreg for a lightweight insulating plate, a lightweight insulating plate prepreg and a manufacturing apparatus for improving the workability by minimizing the large amount of matrix composition remaining on the surface of the prepreg to stick to the operator's hands To provide.

In order to achieve the above object, the lightweight insulating plate according to the present invention is manufactured by heating and pressurizing one or a plurality of prepregs semi-cured by impregnating a reinforcing member into a matrix composition comprising an adhesive resin and a porous filler. It is done.

In addition, the method of manufacturing a prepreg for a lightweight insulating plate according to the present invention uses an impregnation tank, an impregnation roller disposed in the impregnation tank, and an apparatus including a nozzle disposed on the impregnation roller, and is adhesive to the impregnation tank. Step S1 of preparing a matrix composition comprising a resin and a porous filler; S2 step of injecting the matrix composition to the glass cloth to be impregnated from the nozzle while impregnating the glass cloth in the matrix composition accommodated in the impregnation tank; And a step S3 of manufacturing the prepreg by transferring the impregnated glass paper to a drying chamber, wherein the step S2 includes indirect spraying injected into the glass cloth after the composition sprayed from the nozzle hits the impregnation roller. Characterized in that way.

In addition, the manufacturing apparatus of the prepreg for lightweight insulating plate according to the present invention is to impregnate the reinforcing member in the matrix composition and semi-cured, the impregnation tank for accommodating the matrix composition comprising the adhesive resin and the porous filler; An impregnation roller for impregnating the reinforcing member disposed in the impregnation tank into the matrix composition; And a nozzle unit including a tubular tube disposed on the impregnation roller and a plurality of nozzles formed on the tube to spray the matrix composition.

In addition, the nozzle of the manufacturing apparatus of the prepreg for lightweight insulating plate according to the present invention is characterized in that the matrix composition to be sprayed is disposed at an angle that can be reflected and sprayed to the reinforcing member after the impregnation roller.

In addition, the impregnation roller of the manufacturing apparatus of the prepreg for lightweight insulating plate according to the present invention is made of a first, second impregnation roller, between the first, second impregnation roller guide roller disposed above the matrix composition accommodated in the impregnation tank Is further provided, wherein the nozzle portion is characterized by consisting of a first nozzle portion disposed on the upper portion of the first impregnation roller, and a second nozzle portion disposed below the guide roller and injecting the matrix composition into the impregnation tank.

Further, the impregnation tank of the apparatus for manufacturing a prepreg for lightweight insulating plates according to the present invention includes a first side wall, a first accommodating portion formed in an inner space of the first side wall, and a second side wall formed outside of the first side wall. And a discharge port formed on one side of the second accommodation part and a second accommodation part formed in a space between the first side wall and the second side wall, wherein the first side wall is formed lower than the second side wall, The matrix composition flowing into the second accommodating part from the accommodating part may be circulated back to the first accommodating part through the discharge port and the nozzle part.

The apparatus may further include a frame in which the impregnation tank is fixed to a lower part of the manufacturing apparatus of the prepreg for lightweight insulating plates according to the present invention, and the first upper fixing frame in which the first impregnation roller and the first nozzle part are respectively fixed to the upper part of the frame. And a second upper fixing frame to which the second impregnation roller is fixed, and a lifting means for elevating the impregnation tank is installed at a lower portion thereof, and the second nozzle part is fixed to an upper surface of the impregnation tank.

According to the manufacturing method of the lightweight insulating plate, the lightweight insulating plate prepreg, and its manufacturing apparatus which concerns on this invention of the above structure, it is excellent in adhesive force and can be made light weight by using a porous filler.

In addition, according to the present invention, a method for manufacturing a lightweight insulating plate, a lightweight insulating plate prepreg, and a manufacturing apparatus thereof, solve the problem of floating on top of the matrix composition when using the porous filler, thereby uniformly distributing the porous filler into the reinforcing member. It can be effective.

In addition, according to the present invention, a method for manufacturing a lightweight insulating plate, a lightweight insulating plate prepreg, and an apparatus for manufacturing the same, injecting the composition to be injected into the reinforcing member in an indirect injection method, can maintain smoothness without forming a bone in the reinforcing member. It works.

In addition, according to the present invention, a method of manufacturing a prepreg for a lightweight insulating plate, a lightweight insulating plate, and a manufacturing apparatus thereof, a large amount of matrix composition remains on the surface of the prepreg, thereby minimizing sticking to an operator's hand, thereby improving workability. It works.

1 is a conceptual diagram schematically showing an embodiment of an apparatus for manufacturing a prepreg for a lightweight insulating plate according to the present invention.
2 is a perspective view showing an embodiment of a manufacturing apparatus of a prepreg for a lightweight insulating plate according to the present invention.
3 is a view showing the impregnation and spraying of the matrix composition to the reinforcing member by the apparatus for manufacturing a prepreg for lightweight insulating plates according to the present invention.
4 is a process chart showing each step of the method for manufacturing a prepreg for a lightweight insulating plate according to the present invention.
5 is a conceptual diagram schematically illustrating a method of manufacturing a prepreg for a lightweight insulating plate according to the present invention.
6 is a conceptual diagram illustrating a process of impregnating and drying glass paper in a method of manufacturing a prepreg for a lightweight insulating plate according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings.

In the description of the present invention, the same or similar elements are denoted by the same or similar reference numerals, and a detailed description thereof will be omitted.

First, the lightweight insulating plate according to the present invention may be manufactured by heating and pressing one or a plurality of semiprecured semiprepregs by impregnating a reinforcing member into a matrix composition including an adhesive resin and a porous filler.

The lightweight insulating plate may be used for various products as long as it is used for the purpose of electrically disconnecting the external, and may be used as a cover for protecting a touch panel such as a smartphone.

The reinforcing member 107 may be an organic polymer, such as glass cloth (glass cloth), glass paper (GP), aramid fibers, polyethylene fibers, etc. Among them, the long-fiber chemistry physically stable and excellent physical properties It is preferably a glass cloth woven with a cloth. The reinforcing member may be used by laminating one or a plurality of reinforcing members according to the use of the product.

The matrix composition is composed of the adhesive resin and the porous filler as a main raw material. Specifically, the matrix composition may include 100 parts by weight of the adhesive resin, 10 to 100 parts by weight of the porous filler, 1 to 10 parts by weight of the curing agent, and 10 solvents. It can be exemplified by including 50 to 200 parts by weight, 50 to 200 parts by weight of the diluent, but is not limited thereto.

The adhesive resin may be at least one selected from a thermosetting resin consisting of an epoxy resin, a phenol resin, a melamine resin and a polyester resin. Among them, epoxy resins are preferred because they have excellent adhesion, low volume shrinkage, excellent mechanical properties, chemical resistance, and low volatile emission upon curing.

The curing agent is to allow the thermosetting resin to be cured by bridge bonding, and may include amines, benzoyl peroxide or polyamide. A curing accelerator, for example, DMA (dimethylamine) may be further added together with the curing agent.

The solvent serves to dissolve the curing agent to the curing accelerator in the solid state.

The solvent may be formed of at least one compound, and examples thereof may include compounds such as MCS (methyl cellsolve) and DMF (dimethylformamide), but are not limited thereto.

The diluent is to adjust the overall viscosity of the matrix composition, it can illustrate acetone (acetone).

The porous filler not only improves the mechanical properties such as strength and elasticity of the product, but also serves to lighten the weight of the product, various kinds of inorganic fillers may be used, and porous silica (chemical name: SODA LIME BOROSILICATE GLASS, CAS NO: 65997-17-3) can be exemplified. In addition, the porous filler lowers the manufacturing cost, and also serves to impart flame retardant properties.

Since the porous silica has a specific gravity of 0.12-0.63, which is smaller than that of the adhesive resin, a problem arises that the porous silica floats to the top of the matrix composition even when the mixture is sufficiently mixed. The present invention proposes a method for solving the problems occurring during the manufacture of the lightweight insulating plate in the manufacturing apparatus and manufacturing method of the prepreg for the lightweight insulating plate of the present invention described later.

1 is a conceptual diagram schematically showing an embodiment of a manufacturing device of a prepreg for lightweight insulating plates according to the present invention, Figure 2 is a perspective view showing an embodiment of a manufacturing device of a prepreg for a lightweight insulating plate according to the present invention 3 is a view showing the impregnation and spraying of the matrix composition on the reinforcing member by the apparatus for manufacturing a prepreg for lightweight insulating plates according to the present invention.

1 to 3, the apparatus 400 for manufacturing a prepreg for lightweight insulating plates according to the present invention includes a frame 410, an impregnation tank 430, an impregnation roller 450, and a nozzle unit 470. ) May be included.

Specifically, the frame 410 serves to support or fix the impregnation tank 430, the impregnation roller 450, and the nozzle unit 470, and has an impregnation tank at the lower portion of the frame 410. 430 is installed, the first upper fixing frame 415 and the second upper fixing frame 417 to which the impregnation roller 450 to the nozzle unit 470 is fixed may be formed.

The impregnation tank 430 serves to receive the matrix composition 105 including the adhesive resin and the porous filler, and is coupled to the lower portion of the frame 410.

The impregnation tank 430 may have a double jacket structure that is divided into a first accommodating part 433 and a second accommodating part 437 on the first side wall 431. The matrix composition 105 is accommodated in the first accommodating portion 433, and the impregnation roller 450 is disposed into the accommodated matrix composition 105.

In detail, the impregnation tank 430 is formed at the outer side of the first side wall 431, the first accommodating part 433 formed in the inner space of the first side wall 431, and the first side wall 431. The second side wall 435, the second accommodation part 437 formed in the space between the first side wall 431 and the second side wall 435, and an outlet formed at one side of the second accommodation part 437 ( 439).

The first side wall 431 of the impregnation tank 430 is formed to be lower than the second side wall 435 so that the water level of the matrix composition accommodated in the first accommodating part 433 is equal to the height of the first side wall 431. Limited. In the present invention, since the matrix composition 105a is sprayed from the nozzle portion 470 at the same time as the impregnation of the reinforcing member in the matrix composition, the matrix composition having an amount exceeding the volume of the first accommodating portion 433 is made to be made. It flows over the 1st side wall 431, and flows into the 2nd accommodating part 437.

As such, the matrix composition introduced into the second accommodating part 437 is discharged from the impregnation tank 430 through the discharge port 439 and stored in a storage tank (not shown), and again through a pump (not shown). The nozzle unit 470 and the first accommodation unit 433 may be configured to circulate.

The impregnation roller 450 is disposed in the impregnation tank 430, specifically, the first impregnation tank 430 to guide the reinforcing member 107 supplied from the winding roller 303 to be impregnated with the matrix composition 105. Play a role.

The impregnation roller 450 may be composed of only the first impregnation roller 451, but may be composed of the first and second impregnation rollers 451 and 453 as shown.

In addition, a guide roller disposed above the matrix composition 105 accommodated in the impregnation tank 430 may be further installed between the first and second impregnation rollers 451 and 453.

The reinforcing member 107 supplied from the winding roller 303 is impregnated into the matrix composition twice while passing through the first impregnation roller 451, the guide roller 460, and the second impregnation roller 453. After that, it is transferred to the pressing roller 309.

The first impregnation roller 451 may be fixed to the first upper fixing frame 415, and the second impregnation roller 453 may be fixed to the second upper fixing frame 417.

The nozzle unit 470 serves to inject the matrix composition 105a composed of the same components as the matrix composition 105 contained in the impregnation tank 430, and the tubular tube 475 and the tube ( 475 may include a plurality of nozzles 476 that spray the matrix composition 105a, 105b.

The nozzle part 470 is disposed above the first impregnation roller 451 and is disposed below the guide roller 460 and the first nozzle part 471 to inject the matrix composition 105a. And a second nozzle portion for injecting the matrix composition 105b into 430.

The first nozzle part 471 sprays the matrix composition 105a on the reinforcing member 107 to allow the matrix composition to fully penetrate into the reinforcing member 107, specifically, the fiber tissue of the woven glass cloth. Play a role.

The nozzle 476 of the first nozzle unit 471 is disposed at an angle at which the matrix composition 105a to be sprayed impinges on the impregnation roller 450 and is reflected and sprayed to the reinforcing member 107. desirable. When the nozzle 476 directly sprays the matrix composition 105a to the reinforcing member 107, a valley is formed on the surface of the reinforcing member 107 by the spraying pressure, and the area directly sprayed. This is because a filler amount imbalance with an area that is not injected causes a defect.

Specifically, the matrix composition 105a sprayed from the nozzle of the first nozzle part 471 passes through the matrix composition 105 accommodated in the first accommodating part 433 of the impregnation tank 430 to impart the first impregnation. The roller 451 hits, reflects and is indirectly injected into the reinforcing member 107.

The second nozzle portion 473 may be disposed below the guide roller 460, and serves to inject the matrix composition 105b into the impregnation tank 430. Or can be configured to be fixed.

The injection angle of the nozzle 476a of the second nozzle portion 473 is directly applied to the reinforcing member 107 hanging on the first impregnation roller 451 and the second impregnation roller 453. It is preferable that it is the range (alpha) which is not sprayed.

By providing the second nozzle part 473, the impregnating tank 430, specifically, the porous filler of the matrix composition 105 in the first accommodating part 433 may be uniformly stirred or dispersed.

On the other hand, the lifting means 420 for elevating the impregnation tank 430 may be installed in the lower portion of the frame 410.

The lifting means 420 may illustrate a hydraulic cylinder 421 disposed between the lower portion of the frame 410 and the impregnation tank 430, but is not limited thereto.

The impregnation roller 450 and the impregnation roller 450 are moved up and down by the elevating means 420 in a state where the impregnation roller 450 and the nozzle unit 470 are fixed, so that the impregnation roller 450 has a matrix composition 105. The height to be locked in can be easily adjusted and provides convenience in cleaning or repairing the impregnation tank.

Hereinafter, the manufacturing method of the prepreg for lightweight insulating plates according to the present invention will be described in detail.

Figure 4 is a process diagram showing each step of the manufacturing method of the prepreg for lightweight insulating plate according to the present invention, Figure 5 is a conceptual diagram schematically showing a manufacturing method of a prepreg for a lightweight insulating plate according to the present invention, Figure 6 It is a conceptual diagram which shows the process of impregnating and drying glass paper among the manufacturing methods of the prepreg for lightweight insulating plates which concern on this invention.

1 to 6, the method for manufacturing a prepreg for a lightweight insulating plate according to the present invention may use the above-described prepreg manufacturing apparatus for a lightweight insulating plate, and largely prepares the matrix composition 105 in step S1 and glass. It may include the step S2 of impregnating the cloth 107 in the matrix composition 105 and spraying the matrix composition 105, and the step S3 of preparing a prepreg.

Specifically, the step S1 is a matrix composition comprising 100 parts by weight of the adhesive resin and 10 to 100 parts by weight of the porous filler, 1 to 10 parts by weight of the curing agent, 10 to 50 parts by weight of the solvent, 50 to 200 parts by weight of the diluent. It is a process of preparing by mixing and stirring.

In the step S2, the impregnation tank 301 in which the matrix composition 105 contains the reinforcing member 107, for example, the glass cloth 107, wound in the form of a roll on the first and second winding rollers 303a and 303b. At the same time as the continuous supply to the nozzle 476, the matrix composition 105a is sprayed on the glass cloth 107. As described above, two impregnations are performed by the first and second impregnation rollers 451 and 453 which are immersed in the matrix composition 105, and are impregnated by the first nozzle part 471 while being impregnated toward the first impregnation roller 451. Injection is made. In the step S2, since the matrix composition 105b sprayed from the nozzle 476 hits the impregnation roller 450, the spray pressure is applied to the glass cloth 107 because the matrix composition 105b is sprayed onto the glass cloth 107. There is an advantage to avoid concentration on a specific area of cloth. That is, the sprayed matrix composition 105a is made in the matrix composition 105 in the impregnation tank 430 without directly contacting the surface of the glass cloth 107, and is reflected by the first impregnation roller 451, so that the spray pressure may be appropriately adjusted. Can be reduced. In addition, since the sprayed matrix composition 105a spreads while being bumped by the first impregnation roller 451, the matrix composition 105a may be sprayed evenly on the surface of the reinforcing member 107.

At this time, by adjusting the line speed to control the impregnation time and drying time of the glass cloth, it is possible to control the physical properties of the prepreg.

The impregnated glass cloth 107 passes through a pair of compression rollers 309 installed between the impregnation roller 450 and the vertical rollers 307: 307a and 307b located inside the drying chamber 310, and then inside the glass paper. The matrix composition is permeated into the pores of. And the matrix composition is supplied to the over again falls into the impregnation tank by the compression roller 309.

In step S3, the impregnated glass cloth 107 is transferred to the drying chamber 310 to manufacture the prepreg 101.

The drying chamber 310 may be divided into a hot air drying section 320 for hot air drying the heavily impregnated glass cloth 107 and a cooling section 330 for cooling the heated glass cloth 107 at room temperature.

The hot air drying section 320 is further divided into first, second and third hot air drying sections 321, 322, and 323 divided by the first blocking wall 325 and the second blocking wall 327, respectively. Burners 329 may be installed in the second and third hot air drying sections 321, 322, and 323, respectively, to maintain the set temperatures. Here, the hot air drying section 320 means that the glass paper is dried and semi-cured by using hot air, and is not limited to that hot air is directly injected onto the glass cloth surface.

The first blocking wall 325 and the second blocking wall 327 may be installed in a transverse direction, respectively, and a hollow hole may be formed so that the glass cloth 107 may be transported.

The first hot air drying section 321 is a section that is maintained at 100 ~ 110 ℃, to preheat the heat at a temperature less than the curing temperature of the matrix composition.

After the first hot air drying section 321 is dried in the second hot air drying section 322.

The second hot air drying section 322 is preferably maintained at 170 ~ 185 ℃ so that the matrix composition can be semi-cured in a predetermined range in this section.

In addition, the third hot air drying section 323 is maintained at 150 to 165 ° C. to allow the semi-curing to be finished without a sudden temperature change after the second hot air drying.

The prepreg 101 dried through the hot air drying section 320 is transferred to the cooling section 330 to prevent further hardening, and the cooling section 330 is 10 to 30 ° C., preferably It is preferable to keep at a normal temperature of 15-25 degreeC. In the cooling section 330, a cooling means, for example, a jacket for cold water circulation may be installed.

In this way, the hot air drying section is divided into three sections having different temperature ranges, and hot air drying to efficiently control the amount and degree of curing (semi-drying degree) of the adhesive resin contained in the prepared prepreg. . For example, the cured prepreg is controlled to have a resin content of 70-90%, a resin flow of 5-15%, and a filler content (filler weight / gross weight of prepreg * 100) 40-60%.

In addition, a large amount of matrix composition remains on the surface of the prepreg, thereby minimizing sticking to the operator's hand, thereby improving workability and maximizing adhesiveness.

The step S4 is a step of stacking a plurality of semi-prepreg 101, heating and pressurized to produce an insulating plate. The insulating plate is trimmed to fit the size and application, thereby completing the manufacturing process.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: interior and exterior materials for construction 101: prepreg
103: surface material 105: matrix composition
107: reinforcing member or glass paper 303: winding roller
307: vertical roller
309: compression roller 310: drying chamber
320: hot air drying section 321: first hot air drying section
322: second hot air drying section 323: third hot air drying section
325: first barrier wall 327: second barrier wall
329: burner 330: cooling section
400: prepreg manufacturing device
410: frame 415: first upper fixing frame
417: second upper fixing frame 420: lifting means
430: impregnation tank 431: first side wall
433: first accommodating part 435: second side wall
437: second receiving portion 439: outlet
450: impregnation roller 451, 453: 1st, 2 impregnation roller
460: guide roller 470: nozzle
471, 473: 1st, 2nd nozzle part 475: tube
476: nozzle

Claims (7)

delete In the manufacturing method of the prepreg using the apparatus containing the impregnation tank, the impregnation roller arrange | positioned in the said impregnation tank, and the nozzle arrange | positioned above the said impregnation roller,
S1 step of preparing a matrix composition comprising an adhesive resin and a porous filler in the impregnation tank;
S2 step of injecting the matrix composition to the glass cloth to be impregnated from the nozzle while impregnating the glass cloth in the matrix composition accommodated in the impregnation tank; And
S3 step of manufacturing the prepreg by transferring the impregnated glass paper to the drying chamber;
The step S2 is a method of manufacturing a prepreg for a lightweight insulating plate, characterized in that the composition is injected from the nozzle hit the impregnation roller, indirect injection method is injected into the glass cloth. In the manufacturing apparatus of the prepreg for lightweight insulating plates which impregnates the reinforcing member in the matrix composition and semi-cured,
An impregnation bath containing a matrix composition comprising an adhesive resin and a porous filler;
An impregnation roller for impregnating the reinforcing member disposed in the impregnation tank into the matrix composition;
And a nozzle unit including a tubular tube disposed on the impregnating roller and a plurality of nozzles formed on the tube to inject a matrix composition. The method of claim 3,
The nozzle is a device for manufacturing a prepreg for lightweight insulating plates, characterized in that the matrix composition to be sprayed after hitting the impregnation roller, is disposed at an angle that can be reflected and sprayed to the reinforcing member. The method of claim 3,
The impregnation roller is made of a first, second impregnation roller,
Between the first and second impregnation roller is further provided with a guide roller disposed above the matrix composition accommodated in the impregnation tank,
The nozzle part comprises a first nozzle part disposed on the upper part of the first impregnation roller, and a second nozzle part disposed below the guide roller and injecting a matrix composition into the impregnation tank. Device. The method of claim 5,
The impregnation tank is formed in a space between a first side wall, a first accommodating portion formed in an inner space of the first side wall, a second side wall formed outside the first side wall, and a space between the first side wall and the second side wall. And a discharge port formed at one side of the second accommodation part and the second accommodation part,
The first side wall is formed lower than the second side wall,
The matrix composition flowing into the second accommodating part from the first accommodating part is circulated back to the first accommodating part through the discharge port and the nozzle part. The method according to claim 6,
Further comprising a frame in which the impregnation tank is fixed,
The upper part of the frame is provided with a first upper fixing frame to which the first impregnating roller and the first nozzle part are respectively fixed, and a second upper fixing frame to which the second impregnating roller is fixed. Means are installed,
The second nozzle unit is a manufacturing apparatus of the prepreg for lightweight insulation plate, characterized in that fixed to the upper surface of the impregnation tank.

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