KR20040053724A - Composite panel, manufacturing method thereof and manufacturing apparatus thereof - Google Patents

Abstract

PURPOSE: A complex panel is provided to have a proper strength and structure, thereby the complex panel can be used as interior and exterior decoration materials in a construction field. CONSTITUTION: The complex panel comprises; a pair of decoration panels(11,31) having a lot of convexes(12,32) in the one side, a lot of concaves(13,33) in the opposite side, a core(21) being placed between the pair of decoration panels(11,31) and formed to have continuous winkle(22). The upper and lower sides of the core(21) are adhered to the panels(11,31) respectively by using a bonding agent.

Description

Composite panel, manufacturing method of composite panel and apparatus for manufacturing composite panel {Composite panel, manufacturing method

The present invention relates to a composite panel, a manufacturing method of the composite panel, and an apparatus for manufacturing the composite panel. More specifically, the present invention relates to a metal composite panel, a method for producing a composite panel, and an apparatus for producing a composite panel having a suitable strength and structure for use in building interior, exterior materials and the like.

In the construction of buildings, the development of interior and exterior materials for interior and exterior of buildings is being made in various forms.

As the most representative and common interior and exterior materials, wood panels are used, which are installed between the plywood, which is the front and rear plates, and the front and rear plates to fix the front and rear plates to each other, and to maintain a constant shape and thickness. There is a wooden panel composed of a frame of wood. It is easy to manufacture, and it is easy to purchase and process materials, so it is used by assembling plywood and frame directly at the site where the building where most wooden panels are used is used. come. In addition, due to the nature of the material is flammable, recently, its use is gradually reduced due to the regulation of related laws such as building and fire law.

On the other hand, in order to overcome the flammability of the wood panel as described above, gypsum board coated with a flame retardant material having a flame retardancy such as gypsum powder, sodium silicate powder, etc. has been developed and used. These gypsum boards are usually processed and supplied by the manufacturer to a certain standard, and the gypsum boards are appropriately cut at the site of the building where the user is to be used, and formed into a wall having a certain thickness to form a decorative wall. It is widely used. However, when constructing a wall, such as a decorative wall, especially a decorative wall, there is a disadvantage in forming the wall to have a certain thickness in the field, and although it is coated with a flame retardant material, it suppresses flame conduction for a certain time and provides complete nonflammability. In addition, there are also cases where the strength is not sufficient, and furthermore, there are disadvantages in that a lot of restrictions are placed on the use as an exterior material.

SUMMARY OF THE INVENTION An object of the present invention is to provide a metal composite panel, a method for manufacturing a composite panel, and an apparatus for manufacturing a composite panel having a suitable strength and structure for use in building interior and exterior materials.

1 is an exploded perspective view showing a composite panel according to one specific embodiment of the present invention.

2 is a side view of the composite panel of FIG.

3 is an exploded perspective view showing a composite panel according to another specific embodiment of the present invention.

Figure 4 is an exploded perspective view showing a composite panel according to another specific embodiment of the present invention.

5 is a configuration diagram schematically showing the configuration of a manufacturing apparatus for manufacturing a composite panel according to the present invention.

※ Explanation of code for main part of drawing

11: upper decoration plate 12: protrusion

13: main part 21: core

22: pleat 23: vertex

31: lower decorative plate 32: stone

33: the main part

51: first coil supply unit 52: the first metal plate

53: upper decoration plate molding 61: second coil supply

62: second metal plate 63: core molding portion

71: adhesive coating 81: third coil supply

82: third metal plate 83: lower decorative plate forming part

91: bonding portion 92: heater

93: cutout

In the composite panel according to the present invention, a protrusion is formed at one end and a pair of decorative plates and recesses are formed at opposite opposite ends, and the corrugations of a continuous curved shape are repeatedly formed. It comprises a core formed of, and the upper and lower ends of the corrugation of the core is made to adhere to each inner surface of the pair of decorative plates by a commercially available adhesive such as hot melt.

The decorative plate and the core is made of a conventional metal plate such as iron plate, aluminum plate, stainless steel plate, etc., preferably, the surface is made of a conventional metal plate coated with a synthetic resin such as fluorocarbon resin, silicon resin or polyester resin.

In the manufacturing method of the composite panel according to the present invention, in the manufacture of the composite panel, (1) both sides end on the basis of the width direction of the metal plate while continuously releasing the metal plate from the first coil wound the metal plate having a constant width; An upper decorative plate forming step of advancing in the longitudinal direction of the metal plate while forming a protrusion on one side end and a recess on the other end thereof; (2) While the upper plate is formed in the upper decorative plate forming step, while continuously unwinding the metal plate from the second coil wound the metal plate having a predetermined width to form a corrugated core repeatedly formed in the shape of the continuous bending of the metal plate Core forming step of proceeding in the longitudinal direction of the metal plate while forming; (3) The protrusions are formed at one end of the both ends of the two sides of the core plate while continuously releasing the metal plate from the third coil wound with the metal plate having a predetermined width under the core formed in the core forming step. And a lower decorative plate forming step of proceeding in the longitudinal direction of the metal plate while forming a recess in the other end opposite; (4) an adhesive coating step of applying an adhesive to the top and bottom of the wrinkles of the core; (5) After the upper decorative plate and the lower decorative plate formed in each of the upper decorative plate forming step and the lower decorative plate forming step around the core coated with the adhesive in the adhesive coating step to the core and laminated, the upper decorative plate, core Bonding step of heating and pressing the laminated body laminated in the order of the lower decorative plate at a pressure of 1 to 2kg / ㎡, 80 to 150 ℃; And (6) a post-treatment step of cutting the composite panel bonded and stacked in the order of the upper decorative plate, the core, and the lower decorative plate to a predetermined size.

In addition, the apparatus for producing a composite panel according to the present invention, the first coil supply unit for continuously supplying a first metal plate; An upper portion of the first metal plate supplied from the first coil supplying portion in a longitudinal direction of the first metal plate while forming a protruding portion at one end of the opposite side ends and a concave portion at the opposite other end, based on the width direction thereof. Decorative plate molding part; A second coil positioned after the first coil supply unit based on a moving direction of the first metal plate of the first coil supply unit, and continuously supplying a second metal plate below the first metal plate supplied from the first coil supply unit; Supply unit; A core forming part for advancing in the longitudinal direction of the second metal plate while forming the second metal plate supplied from the second coil supply part as a core in which corrugations of continuous curved shapes are repeatedly formed; A third coil positioned after the second coil supply unit based on the advancing direction of the second metal plate of the second coil supply unit, and continuously supplying a third metal plate below the second metal plate supplied from the second coil supply unit; Supply unit; A lower portion of the third metal plate supplied from the third coil supplying portion in a longitudinal direction of the third metal plate while forming a protrusion at one end of the both ends and a recess at the other end thereof opposite to the width direction; Decorative plate molding part; An adhesive coating part disposed between the core molding part and the lower decoration plate molding part and applying an adhesive to the top and bottom of the pleats of the core supplied from the core molding part; The upper and lower decorative plates formed at each of the upper and lower decorative plate molding parts are stacked to approach the core, and then the upper and upper decorative plates, the core and the lower decorative plate are stacked. Bonding unit for heating and pressing the laminated body laminated by the; And a cutting part for cutting the composite panel bonded and stacked in the order of the upper decorative plate, the core and the lower decorative plate to a predetermined size.

The adhesive consists of a heatable roller capable of applying a pressure of 80 to 150 ° C. and 1 to 2 kg / m 2 to the laminate.

Particularly preferably, the metal plates may be preheated to 170 to 200 ° C. just before entering the belt conveyor, which improves the adhesion rate by an adhesive such as a hot melt adhesive, thereby increasing productivity, and in the bonding portion, the bonding process is performed only by heating. Allow it to complete

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

1 to 4, in the composite panel according to the present invention, a pair of decorative plates 11 having protrusions 12 and 32 formed at one end and recessed portions 13 and 33 formed at the opposite end thereof. , 31, and the pair of decorative plates 11 and 31, and including a core 21 repeatedly formed of corrugations 22 having a shape that is continuously curved in a wave shape, and the corrugation of the core 21. 22) is characterized in that the upper and lower ends are bonded to each inner surface of the pair of decorative plates 11 and 31 by a commercially available adhesive such as hot melt. Accordingly, the core 21 including the corrugations 22 of the wave shape continuously curved between the pair of decorative plates 11 and 31 is positioned, whereby the decorative plates 11 and 31 and the core 21 are located. ), A composite panel laminated in the order of the decorative plates 11 and 31 is obtained. The upper and lower decorative plates 11 and 31 are for providing a beautiful appearance, and the core 21 is adhered and fixed to the upper and lower decorative plates 11 and 31 so that these decorative plates 11 and 31 are fixed. Together with them they form a solid panel. The core 21 can provide a mechanically robust composite panel as the number (pitch) of the corrugation 22 per unit area increases, but in proportion to the weight, it takes a lot of effort for transportation and is applied to the floor of the building. Losing load may be higher, and the smaller the number (pitch) of wrinkles 22 per unit area becomes, the lighter it is, the less effort is required for transportation and the lower the load on the floor of the building, but the less mechanically It will provide a composite panel. Therefore, the thickness of the composite panel to be manufactured may vary, and in consideration of the weight and mechanical strength of the composite panel, the core 21 is preferably formed to have 7 to 100 corrugations 22 per square meter. Can be. In addition, it can be appropriately adjusted according to the thickness of the composite panel, the thickness of the composite panel may be within the range of 6 to 75mm. If the thickness of the composite panel is less than 6mm, there may be a problem that the thickness of the composite panel is too thin to reduce the durability and mechanical properties, if it exceeds 75mm, it becomes too thick to reduce the practicality, handling by weight, etc. There may be a disadvantage of difficulty.

The shape of the pleats 22 of the core 21 may be bent into a gentle shape, as shown in FIGS. 1 to 3, and also includes a flat portion partially straightened as shown in FIG. 4. The composite panel according to the present invention is not limited by the shape of the corrugation 22 of the core 21, the shape and the number of pitches of the corrugation 22, as described above, the weight of the composite panel As can be determined in consideration of the mechanical strength and the like, it will be understood by those skilled in the art that it is possible to easily determine the shape and pitch number of the appropriate wrinkles 22 by repeated experiments or rule of thumb. The direction of the pleats 22 of the core 21 can also be arbitrarily determined. That is, as shown in FIG. 1, the core 21 in which the corrugations 22 are formed in a direction perpendicular to the direction connecting the protrusions 12 and 32 formed in the decorative plates 11 and 31 and the recesses 13 and 33 is provided. It can be fixed between the decorative plate (11, 31), and, as shown in Figure 3, in the direction connecting the projections (12, 32) and the recesses (13, 33) formed in the decorative plate (11, 31) The core 21 in which the corrugation 22 is formed in the horizontal direction with respect to the decorative plates 11 and 31 may be fixed. In addition, the shape and size of the protrusions 12 and 32 and the recesses 13 and 33 may be such that the protrusions 12 and 32 of one composite panel differ from each other in order to form a continuous wall. (13, 33) can be molded so that it can be inserted and fixed, wherein the composite panels coupled by the combination of the protrusions (12, 32) and the recesses (13, 33) are formed to form the same plane after joining Can be. Thereby, a plurality of composite panels according to the present invention can form a continuous wall or the like by inserting and fixing one of the protrusions 12 and 32 of them to the recesses 13 and 33 of the other composite panel. Make sure

The decorative plates 11 and 31 are made of a conventional metal plate such as an iron plate, an aluminum plate, a stainless steel plate, or the like.

In addition, the adhesive may be a commercially available adhesive, such as a conventional hot melt adhesive. Here, the hot melt adhesive is manufactured and supplied commercially by leading domestic and foreign manufacturers. In the 60's, DuPont developed the first ethyl vinyl acetate (EVA) through process automation. It has the advantages of high productivity, environmentally friendly features, wide applicability, and re-adhesion potential. In addition, polyacetal (PA), polyethylene (PE) and the like are used as raw materials other than the above-mentioned ethyl vinyl acetate to compensate for the disadvantages such as heat resistance and cold resistance, and rosin to reduce melt viscosity and improve workability during coating. ), Adhesives such as hydrocarbon resins, paraffin wax for adjusting physical properties, waxes such as micro crystarin, low molecular weight polyethylene (PE), heat stability and viscosity change, color Stabilizers, other additives, etc. for inhibiting carbonization are composed of hot melt adhesives, which are easily understood by those skilled in the art.

In the manufacturing method of the composite panel according to the present invention, in the manufacture of the composite panel, (1) both sides end on the basis of the width direction of the metal plate while continuously releasing the metal plate from the first coil wound the metal plate having a constant width; An upper decorative plate forming step of advancing in the longitudinal direction of the metal plate while forming protrusions 12 and 32 at one end of the rod and recesses 13 and 33 at the other end thereof; (2) While the upper plate is formed in the upper decorative plate forming step (22) while continuously unwinding the metal plate from the second coil wound the metal plate having a predetermined width of the corrugated plate 22 of the shape bent in a wave shape Core forming step of advancing in the longitudinal direction of the metal plate while forming the core 21 is formed repeatedly; (3) One side end of the two end portions of the two sides of the core 21, based on the width direction of the metal plate while continuously releasing the metal plate from the third coil wound around the metal plate having a predetermined width below the core 21 to be formed in the core forming step A lower decorative plate forming step of advancing the projections 12 and 32 in the longitudinal direction of the metal plate while forming recesses 13 and 33 at opposite end portions thereof; (4) an adhesive coating step of applying an adhesive to the top and bottom of the pleats 22 of the core 21; (5) the upper decorative plate 11 and the lower decorative plate 31 formed in the upper and lower decorative plate molding steps, respectively, around the core 21 to which the adhesive is applied in the adhesive coating step. ) And the laminated body in the order of the upper decorative plate 11, the core 21, the lower decorative plate 31 is heated and pressurized at a pressure of 80 to 150 ℃, 1 to 2 kg / ㎡ Adhesion step; And (6) a post-treatment step of cutting the composite panel laminated and bonded to a predetermined size in the order of the upper decorative plate 11, the core 21, and the lower decorative plate 31; and characterized in that it comprises a.

In the upper decorative plate forming step, protrusions 12 and 32 are formed at one end of both side ends of the metal plate with the width of the metal plate being continuously released from the first coil wound around the metal plate having a predetermined width. In the step of proceeding in the longitudinal direction of the metal plate while forming the recesses 13 and 33 at the other end, the upper decorative plate 11 which is subsequently formed according to the position of the first coil is the core 21 and the lower decorative plate ( 31) to be laminated and bonded together. The shaping of the protrusions 12 and 32 and the recesses 13 and 33 can be accomplished by bending the edges of the metal plate by a method such as conventional cold rolling.

The core forming step is a corrugation of a continuous curved shape of the metal plate in a wave shape while continuously releasing the metal plate from the second coil wound around the metal plate having a predetermined width under the upper decoration plate 11 formed in the upper decoration plate forming step. ) Is a step of advancing in the longitudinal direction of the metal plate while forming the core 21 is formed repeatedly, it is fixed between the upper decorative plate 11 formed in the upper decorative plate forming step and the lower decorative plate 31 described later A core 21 for forming a composite panel according to the present invention is manufactured. It will be readily understood by those skilled in the art that the molding of the pleats 22 constituting the core 21 can also be produced by continuously folding the metal plate by the conventional cold rolling method as described above.

The lower decoration plate forming step is performed in the same way or similar to the upper decoration plate forming step, while continuously unwinding the metal plate from the third coil wound the metal plate having a predetermined width under the core 21 formed in the core forming step. It is a step of advancing in the longitudinal direction of the metal plate while forming protrusions 12 and 32 at one end of the both ends and recesses 13 and 33 at the other end opposite to the width direction.

The adhesive coating step is to apply an adhesive to the top and bottom of the pleats 22 of the core 21, by the adhesive to the upper decorative plate 11 and the lower decorative plate (centered around the core 21) 31 allows its inner surfaces to be glued and fixed to the vertices 23 of the corrugations 22 of the core 21.

In the bonding step, the upper decoration plate 11 and the lower decoration plate 31 formed in each of the upper decoration plate forming step and the lower decoration plate forming step are centered on the core 21 to which the adhesive is applied in the adhesive coating step. 21) and then stacked, the laminate laminated in the order of the upper decorative plate 11, the core 21, the lower decorative plate 31 is heated and pressurized at a pressure of 80 to 150 ℃, 1 to 2 kg / ㎡ Bonding to form a laminate of the upper decorative plate 11, the core 21 and the lower decorative plate 31 in a stacked state by heating and pressing at an appropriate temperature and pressure according to the type and characteristics of the adhesive. It is formed into a composite panel in the state of. Here, if the temperature is less than 80 ℃, there may be a problem that the adhesive is not sufficiently melted, the adhesive performance is lowered, if it exceeds 150 ℃, it is uneconomical, there may be a problem such that the adhesive is partially burned, lost. . In addition, when the pressure is less than 1kg / ㎡, there may be a problem that the adhesive capacity is not enough, even if the pressure is less than 2kg / ㎡, the inner core 21 is deformed, a lot of energy to pressurization Consumption, there may be a problem that lowers the productivity, such as the press should be large.

Thereafter, in the post-treatment step, the composite panel in the state of the continuum may be cut to a predetermined size to complete the manufacture of the composite panel according to the present invention. The foundation of the composite panel in the state of the continuum may have a suitable standard, for example, 1m * 1m unit standard, and the plywood used for the interior of a normal building, such as 4m * 8m can be cut. It may be understood that this is to facilitate the handling of transportation, storage and the like.

In addition, the apparatus for manufacturing a composite panel according to the present invention, the first coil supply unit 51 for continuously supplying the first metal plate 52; The first metal plate 52 supplied from the first coil supply unit 51 is provided with protrusions 12 and 32 at one end of both side ends of the first metal plate 52, and a recess 13 at the other end facing the other side. An upper decorative plate forming portion 53 which is formed in the longitudinal direction of the first metal plate 52 while forming a 33; Located after the first coil supply unit 51 based on the traveling direction of the first metal plate 52 of the first coil supply unit 51, the first metal plate 52 supplied from the first coil supply unit 51. A second coil supply part 61 for continuously supplying the second metal plate 62 under the); The second metal plate 62 supplied from the second coil supply unit 61 is formed in the core 21 having the corrugations 22 continuously formed in a wave shape in the longitudinal direction of the second metal plate 62. A core molding portion 63 to be advanced; The second metal plate 62 is positioned after the second coil supply unit 61 based on the traveling direction of the second metal plate 62 of the second coil supply unit 61, and is supplied from the second coil supply unit 61. A third coil supply part 81 for continuously supplying the third metal plate 82 from below); The third metal plate 82 supplied from the third coil supply part 81 is provided with protrusions 12 and 32 at one end of both side ends thereof, and a recess 13 at the other end thereof opposite to the width direction thereof. A lower decoration plate forming part 83 which proceeds in the longitudinal direction of the third metal plate 82 while forming a 33; The adhesive is located between the core molding portion 63 and the lower decorative plate molding portion 83, the adhesive for applying an adhesive to the top and bottom of the pleats 22 of the core 21 supplied from the core molding portion 63 An applicator 71; The upper decorative plate 11 and the lower decorative plate 31 formed in the upper decorative plate forming unit 53 and the lower decorative plate forming unit 83 around the core 21 coated with the adhesive in the adhesive coating unit 71. An adhesive part 91 which heats and presses the laminated body stacked in the order of the upper decorative plate 11, the core 21, and the lower decorative plate 31 after stacking the core 21 to approach the core 21; And a cutting part 93 for cutting the composite panel laminated and bonded to a predetermined size in the order of the upper decoration plate 11, the core 21, and the lower decoration plate 31.

The first coil supply unit 51 is a means for continuously supplying the metal plate from the coil wound around the metal plate while continuously supplying the first coil supply unit 51. In the present invention, at least three metal plates are used. And the second metal plate 62 and the third metal plate 82. The first coil supply unit 51 is a means for continuously supplying the first metal plate 52, and supplies the metal plate from the coil in a wound form. The second coil supply part 61 and the third coil supply part 81 supply the second metal plate 62 and the third metal plate 82, respectively, and are the same as or similar to the first coil supply part 51. Can be understood.

The upper decorative plate forming part 53 has protrusions 12 and 32 at one end of both side ends of the first metal plate 52 supplied from the first coil supplying part 51 with respect to the width direction thereof. As a means for advancing in the longitudinal direction of the first metal plate 52 while forming recesses 13 and 33 at opposite end portions, rollers are used to form the protrusions 12 and 32 and the recesses 13 and 33. A press using a conventional cold rolling method of pressurizing and bending may be used.

The second coil supply part 61 is positioned after the first coil supply part 51 based on the traveling direction of the first metal plate 52 of the first coil supply part 51.

The core forming part 63 forms a second metal plate 62 supplied from the second coil supply part 61 as a core 21 having a plurality of corrugations 22 having a continuously curved shape in a wave shape. It is a portion to advance in the longitudinal direction of the metal plate 62. This serves to maintain the rigidity while maintaining the mechanical properties of the panel in the composite panel according to the present invention. The corrugation 22 forming the core 21 also uses a conventional cold rolling method of pressing and bending using a roller. The lower decorative plate forming part 83 is a third coil supplied from the third coil supply part 81. The metal plate 82 is formed with the protrusions 12 and 32 at one end of the both ends and the recesses 13 and 33 at the opposite end of the third metal plate 82 with respect to the width direction thereof. As a means for advancing in the longitudinal direction, it can be understood that the same as or similar to the upper decoration plate forming portion 53.

The adhesive coating part 71 is located between the core molding part 63 and the lower decoration plate molding part 83, and an upper end of the pleats 22 of the core 21 supplied from the core molding part 63. As a means for applying the adhesive to the bottom and, it may be made of a conventional roll coater, powder spreader or impregnator. The roll coater is known to be able to purchase and use a commercially supplied by leading manufacturers at home and abroad as a liquid adhesive is firstly applied to the roll, and then transferred to the surface of the adherend. The powder spreader is to apply an adhesive by dispersing the adhesive in the form of powder, and the impregnator is to apply the adhesive by immersing the adherend in a container containing a liquid adhesive and applying the adhesive. It is well known to be able to purchase and use commercially supplied by manufacturers.

The adhesive part 91 has an upper decoration plate 11 formed at each of the upper decoration plate molding part 53 and the lower decoration plate molding part 83 with the core 21 coated with the adhesive on the adhesive coating part 71. As a means for heating and pressurizing the laminated body stacked in the order of the upper decorative plate 11, the core 21, the lower decorative plate 31 after the lower decorative plate 31 is approached and laminated to the core 21, The means for accessing the upper decorative plate 11 and the lower decorative plate 31 to the core 21 can be achieved by changing the direction of travel by a freely rotating roller or the like, the heating, pressurizing means is a heater 92 Can be achieved by a press capable of heating. Such heating and pressurizing means are also known to be able to purchase and use commercially supplied by prominent manufacturers at home and abroad.

The cut portion 93 may be a conventional cutter as a means for cutting the composite panel bonded and stacked to the predetermined size in the order of the upper decorative plate 11, the core 21, the lower decorative plate 31. .

The adhesive portion 91 is composed of a heatable roller capable of applying a pressure of 80 to 150 ° C. and 1 to 2 kg / m 2 to the laminate.

Therefore, according to the present invention, there is an effect of providing a metal composite panel, a manufacturing method of the composite panel, and a manufacturing apparatus of the composite panel having a suitable strength and structure for use in building interior, exterior materials and the like.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (6)

A core is formed at one end and is disposed between a pair of decorative plates having recessed portions at opposite end portions and the pair of decorative plates, and includes a core in which corrugations of continuous curved shapes are repeatedly formed. Composite panel characterized in that the upper and lower ends of the pleats are bonded to each inner side of the pair of decorative plates by a commercially available adhesive such as hot melt. The method of claim 1, The composite panel, characterized in that the decorative plate and the core is made of a conventional metal plate, such as iron plate, aluminum plate, stainless steel plate. The method of claim 1, The composite panel, characterized in that the decorative plate and the core is made of a conventional metal plate, such as iron plate, aluminum plate, stainless steel plate coated with a synthetic resin such as fluorine resin, silicon resin or polyester resin. In the manufacture of the composite panel, (1) While continuously releasing the metal plate from the first coil wound around the metal plate having a constant width, forming protrusions at one end of the both ends and the other end at the opposite end in the direction of the width of the metal plate. An upper decorative plate forming step of advancing in the longitudinal direction of the metal plate; (2) While the upper plate is formed in the upper decorative plate forming step, while continuously unwinding the metal plate from the second coil wound the metal plate having a predetermined width to form a corrugated core repeatedly formed in the shape of the continuous bending of the metal plate Core forming step of proceeding in the longitudinal direction of the metal plate while forming; (3) The protrusions are formed at one end of the both ends of the two sides of the core plate while continuously releasing the metal plate from the third coil wound with the metal plate having a predetermined width under the core formed in the core forming step. And a lower decorative plate forming step of proceeding in the longitudinal direction of the metal plate while forming a recess in the other end opposite; (4) an adhesive coating step of applying an adhesive to the top and bottom of the wrinkles of the core; (5) After the upper decorative plate and the lower decorative plate formed in each of the upper decorative plate forming step and the lower decorative plate forming step around the core coated with the adhesive in the adhesive coating step to the core and laminated, the upper decorative plate, core Bonding step of heating and pressing the laminated body laminated in the order of the lower decorative plate at a pressure of 1 to 2kg / ㎡, 80 to 150 ℃; And (6) a post-treatment step of cutting the composite panel laminated and bonded in the order of the upper decorative plate, the core, and the lower decorative plate to a predetermined size; Method of manufacturing a composite panel comprising a. A first coil supply unit for continuously supplying a first metal plate; An upper portion of the first metal plate supplied from the first coil supplying portion in a longitudinal direction of the first metal plate while forming a protruding portion at one end of the opposite side ends and a concave portion at the opposite other end, based on the width direction thereof. Decorative plate molding part; A second coil positioned after the first coil supply unit based on a moving direction of the first metal plate of the first coil supply unit, and continuously supplying a second metal plate below the first metal plate supplied from the first coil supply unit; Supply unit; A core forming part for advancing in the longitudinal direction of the second metal plate while forming the second metal plate supplied from the second coil supply part as a core in which corrugations of continuous curved shapes are repeatedly formed; A third coil positioned after the second coil supply unit based on the advancing direction of the second metal plate of the second coil supply unit, and continuously supplying a third metal plate below the second metal plate supplied from the second coil supply unit; Supply unit; A lower portion of the third metal plate supplied from the third coil supplying portion in a longitudinal direction of the third metal plate while forming a protrusion at one end of the both ends and a recess at the other end thereof opposite to the width direction; Decorative plate molding part; An adhesive coating part disposed between the core molding part and the lower decoration plate molding part and applying an adhesive to the top and bottom of the pleats of the core supplied from the core molding part; The upper and lower decorative plates formed at each of the upper and lower decorative plate molding parts are stacked to approach the core, and then the upper and upper decorative plates, the core and the lower decorative plate are stacked. Bonding unit for heating and pressing the laminated body laminated by the; And a cutting part for cutting the composite panel laminated and bonded to the upper decorative plate, the core, and the lower decorative plate in a predetermined size. The method of claim 5, wherein Apparatus for producing the composite panel, characterized in that the adhesive portion is made of a heatable roller capable of applying a pressure of 80 to 150 ℃, 1 to 2kg / ㎡ to the laminate.