KR101514774B1 - Composite Panel and Manufacturing Method thereof - Google Patents

Abstract

Disclosed are a method for manufacturing composite plates and a composite plate manufactured thereby, which are capable of multi-item low volume production by forming a composite plate for furniture having an edge molding in a various shape from a plate for intermediate core material without a molding or forming frame. The method for manufacturing a composite plate integrated with an edge molding according to the present invention comprises: a first processing step for processing a first edge space with a predetermined depth according to the shape of the composite plate on the top surface of a plate for intermediate core material so that the first edge space is separated from the corner of the plate for intermediate core material by a predetermined distance; a first edge forming step for forming a first edge by injecting and hardening a liquid resin into the first edge space; a second processing step for processing a second edge space so that the second edge space corresponds to the first edge space on the bottom surface of the plate for intermediate core material and the first edge is exposed after the first edge forming step; a second edge forming step for forming a second edge integrated with the first edge by injecting and hardening a liquid resin into the second edge space; a surface material attaching step for attaching surface materials on the entire top and bottom surfaces of the plate for intermediate core material after the second edge forming step; and a molding processing step for forming a composite plate having an edge molding by processing the first and second edges with an outer core material and a surface material located from the corner of the plate for intermediate core material through the first and second edges.

Description

[0001] The present invention relates to a method of manufacturing a composite plate and a composite plate manufactured thereby,

The present invention relates to a method of manufacturing a composite sheet and a composite sheet produced by the method, and more particularly, to a method of manufacturing a composite panel of various shapes in which a single-layer or multi-layer frame molding is integrated without using a mold and a mold, Sheet material.

Generally, in the case of existing plate for furniture and interior plate, the manufacturing method is divided into two types.

First, there is a method of bonding a strip-shaped edge band made by extruding a plastic material such as PVC, PP, ABS resin, or PMMA (acrylic resin) to a rim using an adhesive. This method is used in most low-cost furniture, but there are many disadvantages as follows.

1) Since there is a gap between the edge of the frame and the wood, contamination of foreign matter is easy, and water is easily permeated, resulting in a large amount of peeling of the edge.

2) Bond edge and wood are bonded by using bond, resulting in poor durability and physical properties.

3) In the case of the lowest priced edge band such as PVC and PP, the adhesive force is too weak to be pulled by the hand, and there are a lot of harmful components in the human body, which causes many environmental problems. In the developed countries as well as domestic PVC film regulations are strengthening.

4) In the case of edge band surface machining, most of the work depends on manual work, which takes a long time.

Secondly, there is a method of forming an edge on a rim by injecting a liquid resin by using an injection molding machine and a mold such as ABS resin, PP, PE, or urethane resin on a rim portion. This method is used in expensive furniture and interior materials, and has the following problems.

1) Equipment cost is excessive due to characteristics of manufacturing process of injection and foaming. This is because molds are inevitably generated due to the necessity of molds according to product specifications and models as well as injection molding machines and foaming machines. Therefore, it is very difficult to produce a small quantity of various products by conventional mold injection and mold foaming method.

2) Injection method, especially, is expensive because of the use of precision mold. In case of large size plate, it is impossible to manufacture due to difficulty of injection due to characteristics of machine.

3) In the case of urethane foam, it is difficult to express various aesthetic sense of product because it is simple in color such as black and gray. The urethane edge and the seam of the middle core are not clean and beautiful. In addition, the urethane foam edge is soft and radial quality, and has a disadvantage in that it can not be used for a long time because of low durability when the plate material is used.

In order to solve the disadvantages of conventional furniture and interior panel materials, various developments have been attempted. The present inventors have also found that a method of manufacturing a fire-retardant composite panel having artificial marble in a rim and a fire- 1052813) to create a new concept of composite panels.

However, this method also requires a jig (JIG) or a mold and all kinds of facilities to be prepared according to the specifications of a product in order to inject liquid resin into the rim and harden it. In addition, since the composite panel is manufactured using the compact melamine panel, that is, the CPM (Compact Melamine Penal) as the surface material, the production cost is higher than that of the plate material using LPM or HPM as the surface material.

Patent Registration No. 10-0970673 (2010.07.09) Open Patent Publication No. 10-2006-0037084 (2006.05.03) Registered Utility Model Registration No. 20-0426334 (2006.09.05) Registered Utility Model Registration No. 20-0177059 (Jan. 20, 2000)

An object of the present invention is to provide a method for manufacturing a composite plate material capable of producing a small quantity of various kinds of materials by forming a composite plate material for furniture having a frame molding of various shapes by a plate material for intermediate core material without a mold or a mold, .

The present invention is characterized in that a first edge space having a predetermined depth is formed on the upper surface of a plate material for an intermediate core material in accordance with the shape of a composite plate material and the first edge space is formed by a first machining step;

Forming a first rim by injecting and curing the liquid resin into the first rim space to form a first rim;

A second machining step of machining the second edge space so that the first edge is exposed so as to be equal to the first edge space on the lower surface of the intermediate core material plate after the first edge forming step;

A second rim forming step of injecting and curing the liquid resin into the second rim space to form a second rim integrated with the first rim;

Attaching a surface material to the entire upper and lower surfaces of the plate material for intermediate core material after the second frame forming step;

And a molding process step of forming a composite plate material by forming first and second rims having an outer core and a surface material, which are positioned from the edge of the plate material for middle core material to the first and second edges, .

In the present invention, the first and second frame spaces are formed directly on the intermediate core material plate, and the liquid resin is injected and cured into the first and second frame spaces to form the frame molding of the composite plate. It is possible to manufacture a composite sheet for furniture of various shapes without the need.

According to the present invention, since the first and second rim spaces are formed in the intermediate core board material by the woodworking machine, it is possible to produce composite boards of various designs that can not be formed by a mold and a mold.

Since the present invention does not require a separate mold and a molding die, the manufacturing cost of the composite plate is reduced, and a large composite plate can be produced.

INDUSTRIAL APPLICABILITY The present invention can form a single-color or multiple-layered single-layer or multi-layered structure of a frame of a composite plate, thereby enabling production of a composite plate having a beautiful shape and shape, can do.

In the present invention, a plurality of intermediate core board materials can be laminated side-by-side (upright and tightly pressed) to form frame molding, thereby enabling not only a small quantity of various items but also mass production.

According to the present invention, a middle partition wall having a built-in heat line can be provided between the intermediate core board material and another intermediate core board material, thereby shortening the curing time of the liquid resin and thereby preventing cracks (cracks) It is possible to prevent the partial uncured part and further improve the product quality.

INDUSTRIAL APPLICABILITY The present invention is an intermediate core board material, and it is possible to recycle the discarded molded composite board material, and thus it is possible to produce a composite board by an environmentally friendly and widely used woodworking machine.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a manufacturing method according to the present invention. FIG.
FIG. 2 is an exemplary view showing a plate material for a middle core material in which a first edge space is formed
Fig. 3 is an exemplary view showing a plate material for a middle core material in which a second rim space is formed
Fig. 4 is an exemplary view showing a side laminated state of a plate material for an intermediate core material
5 is a view showing an example in which the heater panel according to the present invention is installed.
Figure 6 is a photographic illustration of a composite sheet with various frame moldings formed in accordance with the present invention.

FIG. 1 is a block diagram showing a manufacturing method according to the present invention, FIG. 2 is an exemplary view showing a plate material for a middle core material in which a first edge space is formed, and FIG. 3 is an illustration showing a plate material for a middle core material in which a second edge space is formed Fig. 5 is a view showing a structure in which the heater panel according to the present invention is installed, Fig. 6 is a view showing an example in which various frame moldings formed according to the present invention are provided 1 is a photograph showing an example of a photograph of a composite plate,

The first edge space 11 having a predetermined depth is formed on the upper surface 13 of the intermediate core material plate 10 according to the shape of the composite plate 20, A primary machining step of forming a predetermined distance from the edge (15) of the plate material for intermediate core material;

Forming a first rim (40) by injecting and curing a liquid resin into the first rim space (11) to form a first rim (40);

After the first edge forming step, the second edge space (12) is processed so that the first edge (40) is exposed on the lower surface (14) of the intermediate core board material so as to be equal to the first edge space step;

Forming a second rim (50) integral with the first rim (40) by injecting and curing the liquid resin into the second rim space (12);

Attaching the surface material (60) to the entire upper surface (13) and the lower surface (14) of the intermediate core board material after the second frame forming step;

The first and second edges 40 and 50 to which the outer core 16 and the surface member 60, which are positioned from the edge 15 of the intermediate core board material to the first and second edges 40 and 50, And a molding process step of forming the composite plate 20 in which the frame moldings 30 are integrally formed.

In the step of attaching the surface material, after the second frame forming step, the upper surface 13, the lower surface 14, and the first and second edges 40 and 50 of the intermediate core material plate are subjected to a sanding treatment to planarize the surface .

Further, the present invention further includes a finishing step of subjecting the rim molding 70 to oil and waxing after the molding process.

The primary processing step is a step of preparing a raw material for manufacturing a composite plate, that is, a surface material and a plate material for an intermediate core material, cutting the composite material to form a required composite plate, and then forming a first rim space. A first edge space 11 corresponding to the shape of the composite plate to be manufactured, that is, the edge portion of the composite plate, is placed on a table of a woodworking machine capable of processing CNC routers, Bit).

The intermediate core board material 10 is a plate material for processing into a composite panel design required by a woodworking machine. The intermediate core core material 17 of the composite panel to be manufactured, The first and second frame spaces 11 and 12 for forming the molding 30 and the outer core 16 for holding the first and second frame spaces 11 and 12 are cut.

The material for the intermediate core material plate 10 is not particularly limited, and any material that can be used as the intermediate core material for a composite plate can be used. Examples of the intermediate core board include MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), Particle Board (Particle Board), Honeycomb board, Wood, Plywood, Boards, vermiculite boards, inorganic boards and so on.

The first edge space 11 is formed on the upper surface 13 of the intermediate core board material so as to be spaced a predetermined distance inward from the edge 15 of the middle core board material. 10 so as to have a predetermined depth.

That is, when the thickness (t, height) of the plate material for intermediate core material is about 18 mm, the first frame space is formed to maintain about 1 to 17 mm, preferably to a half depth of the plate material for intermediate core material .

When the first rim space 11 is formed as described above, the portion surrounded by the first rim space 11 corresponds to the intermediate core 17 of the composite plate, and the portion located outside the first rim space is divided into the first rim And corresponds to the outer core 16 formed to hold the space 11. The outer core 16 is removed in a subsequent process.

The first edge space 11 is formed so that the middle core material 17 and the outer core material 16 are completely separated from each other so that the first edge space 11 can be maintained constant So that the liquid resin can not be injected when the liquid resin is injected, and therefore, it must be formed so as to maintain a predetermined depth.

The first rim forming step may include a step of injecting and curing the liquid resin into the first rim space 11 formed in the intermediate core material plate 10 so that the first rim 40 is integrally formed along the rim of the intermediate core material 17 Wherein the liquid resin is a mixture of an antifoaming agent, a water-reducing agent, an inorganic powder (aluminum hydroxide, magnesium hydroxide, talc, silica, etc.) and a pigment in an undiluted solution of an unsaturated polyester resin mainly based on a thermosetting resin , And MMA syrup can be added as needed.

In addition, the liquid resin may be any other liquid such as an epoxy-based resin or a urethane-based resin, and is not limited to a specific material.

In order to provide the liquid resin with the functionality, it is possible to improve the impact resistance and the heat resistance by introducing GRASS MILLED FIBER, GLASS FIBER FIBER, CARBON MILLED FIBER, and aramid fiber fibril into the inorganic powder , Environmentally friendly fillers such as charcoal powder, jade powder, gin tin powder, and graphite powder may be added.

Further, when the pearl material and the chip material are put into the liquid resin, a frame molding of a brilliant pattern can be formed, and a luminescent pigment and a glitter pigment can be added to form a frame molding that emits light at night.

The first rim forming step may be a single step or a single step in which a first rim 40 is formed by injecting and curing a liquid resin to each middle plate for a core material or a single step for forming a first rim 40 by using an injection port 18 to communicate with the first rim space 11. [ A plurality of intermediate core material plates 10 are stacked side by side so that the injection port 18 is located on the upper side and then the liquid resin is injected into each first edge space 11 through the injection port 18 Includes a multi-product primary stage for injection curing.

In the first step of the single product, the middle core board material 10 is laid horizontally such that the first frame space 11 faces upward, and the liquid resin is injected into the first frame space 11, filled and cured to form the first frame 40 are formed.

In such a single-step primary step, the first rim 40 may be formed as a single layer or a multilayer. That is, a liquid resin having different hue or physical properties may be successively injected and cured into the first edge space 11 to form a first edge of the multilayer.

It is preferable for the workability that the liquid phase resin has a viscosity of about 10,000 to 30,000 cps (centi-poise). For example, for 100 phr of the unsaturated polyester liquid phase, 15 phr of an anti-shrinkage agent, 15 phr of an anti-shrinkage agent, 20 phr of aluminum hydroxide, 30 phr of talc, 10 phr of Grass Milled Fiber or glass fiber reinforced strand, 10 phr of charcoal powder, 5 phr of pigment and 5 phr of hardener. At this time, known antifoaming agents and shrinkage inhibitors are used.

The multi-product primary stage includes an inlet 18 communicating with the first rim space 11 and a plurality of intermediate ridges 18 such that the inlet 18 is upwardly directed and the first rim space 11 is laterally spaced. The sheet materials for core material are aligned (side laminated) so as to be in close contact with each other in the same direction, and then the liquid resin is injected into the first edge space 11 through the injection port to fill and cure.

At this time, a plurality of laterally laminated intermediate core board materials can be press-bonded to each other so as to prevent the liquid resin from leaking into the gap between the intermediate core board materials laid side by side, and then the liquid resin can be injected, filled and cured into the primary edge space through the injection port . The pressurization may be carried out by known pressurizing means, that is, pressurization by a ball / hydraulic cylinder, pressurization by a motor and a screw, or the like.

The injection port 18 is formed to be positioned at the same position in the intermediate core material plate 10, and when a plurality of intermediate core material plate materials are laterally laminated, the injection ports are preferably formed so as to be adjacent to each other.

When the liquid resin is injected while vertically standing the middle core material plate, the workability of the liquid resin may be deteriorated. Therefore, the flowability of about 500 to 1000 cps (centi-poise) The liquid resin preferably has a viscosity of, for example, 0.7 phr of an antifoaming agent, 12 phr of an anti-shrinkage agent, 10 phr of aluminum hydroxide, 20 phr of talc, 20 g of a grass milled fiber or a glass fiberbaff with 100 phr of an unsaturated polyester liquid phase. 0.5 phr of strand, 5 phr of charcoal powder, 4 phr of pigment and 1 phr of hardener.

Further, an intermediate partition wall 70 in which a heat ray 71 is embedded may be further provided between the plurality of side panels laminated to the side.

The intermediate partition 70 is formed of a suitable material such as a compact melamine panel (CPM), an asbestos plate, a stainless steel plate, a steel plate, or the like, and has a built-in hot wire along the rim of the intermediate plate core. That is, the heat lines 71 are provided so as to coincide with the positions of the first rim space (or the second rim space).

The heating wire 71 is connected to a temperature control unit 72 using a cartridge heater, a sieve heater, a film heater, a heating cable and the like to adjust the temperature from 35 ° C to 75 ° C, Respectively.

Further, a heater panel 80 provided with heat lines 81 may be further provided on the outer surfaces of the plurality of side panels laminated on the side.

The heater panel 80 is provided with a plurality of heat lines 81 which contact the edges of the plate material for middle core material. The heater panel 80 is provided with the remaining portions excluding the portion where the injection port 18 is located, Right, and bottom surfaces of the plurality of intermediate core board materials.

The provision of the intermediate partition wall 70 and the heater panel 80 shortens the curing time of the liquid resin and prevents cracks (partial cracking) and partial uncured curing that may occur during the curing process of the liquid resin, As the curing time of the liquid resin becomes longer, the liquid resin at the vertical edge portion of the left and right sides is hardened, and cracks and bubbles may be generated However, this can be prevented when a middle partition wall and a heater panel with a built-in heat line are installed. That is, before the mixture of the liquid resin is cured, the inorganic powder raw material is precipitated to the bottom due to the weight proportion of each constituent material, and the liquid phase such as the base stock solution, antipollution agent and shrinkage preventing agent floats upward, If a middle partition wall is provided between the laterally laminated intermediate core material plates or a separate heater panel is provided at the edge of a plurality of laminated intermediate core material plates, The resin is cured and the liquid resin is cured in an optimum state.

When the intermediate partition wall 70 and the heater panel 80 are not installed, the first frame forming step may be performed in a separate drying chamber having a temperature of 35 ° C to 45 ° C at the time of injecting the liquid resin, .

The secondary processing step is a step of forming the second edge space 12 with respect to the lower surface 14 of the intermediate core board material by reversing the intermediate core board material 10 formed with the first edge 40, The intermediate core material plate 10 is turned upside down so that the positions of the space 11 and the second rim space 12 coincide with each other.

That is, the intermediate core material plate 10 is subjected to CNC router machining or the like so that the upper surface 13 of the plate material for intermediate core material on which the first rim 11 is formed is positioned on the lower side and the lower surface 14 of the plate material for intermediate core material is located on the upper side And a second edge space 40 having a predetermined depth using a woodworking machine bit so that the first edge 40 is exposed along the shape of the first edge 40 12).

When the second rim space 12 is machined as described above, the second rim space 12 is formed to be positioned on the first rim 40 and the first rim 40 is exposed in the second rim space 12. [ .

The outer core 16 and the intermediate core 17 are integrally connected by the first rim 40 and are separated from each other by the formation of the second rim space 12.

The second rim forming step is a step of injecting and curing the liquid resin into the second rim space 12 formed in the middle core material plate 10 so that the second rim 50 is formed along the rim of the intermediate core material 17 , The liquid resin uses a liquid resin which can be used for forming the first rim 40, so that a detailed description thereof will be omitted.

The second rim 50 may be formed of a liquid resin having the same color or physical properties as the first rim 40 or may be formed of a liquid resin having different hue or physical properties from the first rim 40 have.

The second rim forming step may be a single step secondary step of forming a second rim 50 by injecting and curing the liquid resin to each intermediate sheet material, A plurality of intermediate core board materials are laminated side by side so that the injection port is located on the upper side and then the liquid resin is injected and cured into the respective second edge spaces through the injection port to form the second edge 50, And a multi-product secondary step of forming a multi-component secondary step.

As in the single-product first step, the intermediate core board material is laid horizontally such that the second frame space 12 faces upward, and the liquid resin is injected into the second frame space to fill and cure the second core space, Thereby forming the rim 50. In such a single secondary step, the second rim 50 may be formed as a single layer and a multilayer as in the first rim.

The multi-product secondary step uses the same method as in the multi-product primary step. That is, an injection port 18a is formed so as to communicate with the second edge space 12, and a plurality of intermediate core plate materials are formed in the same (or same) shape so that the injection port 18a faces upward and the second edge space 12 is located on the side (Side laminated) side by side in the direction of the first frame space 12 and then injecting and curing the liquid resin into the second rim space 12 through the injection port to form the second rim 50.

Further, in the multi-product secondary step, an intermediate partition wall 70 in which a heat ray 71 is embedded can be further provided between a plurality of laterally laminated intermediate core material plates, and further, And the heater panel 80 may be installed on the right and the lower sides to form the second rim 50.

Since the intermediate partition 70 and the heater panel 80 in which the heat ray is embedded are described in the first stage of multi-products, a detailed description thereof will be omitted.

In the step of attaching the surface material, the surface material 60 is adhered to the upper surface 13 and the lower surface 14 of the intermediate core material plate after the second edge forming step.

Examples of the surface material 60 include a low pressure melamine (LPM), a high pressure melamine (HPM), a copper melamine (CPM), a wood chip board, a laminated board, an ocher board, a charcoal board, a vermiculite board, Boards, etc., are used as main materials, but not necessarily limited thereto, and it is possible to use all adhesive materials.

Since the surface member 60 is attached after forming the first and second edges 40 and 50, it is also possible to use a member having a thickness of 1 mm or less.

The surface material 60 may be formed in a tape shape so as to have a self-adhesive force, or may be adhered to a surface material 60 after a separate adhesive is applied to the intermediate core material plate.

At this time, the adhesive may be an aqueous adhesive of a vinyl acetate series, an aqueous urethane series, an epoxy series or the like as a main adhesive agent, and is not limited to any one kind of adhesive agent. In addition, the adhesive is applied by a spreader machine for woodworking or a spraying method.

In the step of attaching the surface material, after the second frame forming step, the upper surface 13, the lower surface 14, and the first and second edges 40 and 50 of the intermediate core material plate are subjected to a sanding treatment to planarize the surface .

That is, in the step of attaching the surface material, the upper surface 13 and the lower surface 14 of the plate material for middle core material are subjected to a sanding treatment so that the first and second rims 40 and 50 are included, .

In the sanding step, the upper surface 13 and the lower surface 14 of the plate material for intermediate core material in which the first and second edges 40 and 50 are formed are sandwiched using a wood sanding machine known in the art, such as a wide sanding machine.

This sanding step eliminates the difference in height between the first and second rims 40 and 50 formed by the liquid resin and the intermediate core material plate 10, so that a step is generated when the surface material 60 is adhered, The present invention is intended not only to eliminate the phenomenon of the seam line but also to increase the adhesiveness between the surface member 60 and the first and second rims 40 and 50 by sanding the surfaces of the first and second rims 40 and 50 . That is, it is preferable that the first and second rims 40 and 50 made of the liquid resin are sanded because the surface thereof is smooth and adhesion to the surface member 60 may be poor even when an adhesive is applied.

However, in the case of forming the intermediate ribs 70 in which the hot wire is embedded, when the minute ridges and grooves are formed in the intermediate ribs 70 to form the first and second rims 40 and 50, 60 may be adhered.

The molding process is a step of fabricating the intermediate plate material 10 having the surface material 60 attached thereto and then manufacturing the required composite plate material 20. The first and second edges 40 and 50 are formed after the step of attaching the surface material. The outer core 16 and the first and second rims 40 and 50 located on the outer side are processed by a woodworking machine such as a CNC router to form a frame molding 30 of the composite plate.

At this time, the shape of the frame molding 30 can be variously shaped into a desired shape such as a straight line, a half circle, a bevel, etc. according to the shape of a bit.

By such a molding process step, the frame molding 30 is formed along the rim of the intermediate core member 17 and the composite plate member 20 having the surface member 60 attached to the upper and lower surfaces of the intermediate core member 17 is formed do.

In the finishing step, the edge molding 30 of the composite plate 20 is finished by waxing with a polishing oil such as silicone oil or natural chamomile oil.

The composite plate 20 of the present invention manufactured by the above-described method has various colors and excellent physical properties, and can be used for various purposes such as furniture tops (office, home, kitchen, , Sliding drawer), cubicle system (cubicle wall panel, partition door), interior material (built-in wall finishing block, counter top / wall panel), shelf board .

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): plate for intermediate core material (11): first edge space
(12): second rim space (13): upper surface
(14): lower surface (15): corner of plate for intermediate core material
(16): outer core (17): middle core
(18, 18a): injection port (20): composite plate
(30): rim molding (40): first rim
(50): second edge (60): surface material
(70): intermediate partition wall (71): heat line
(72): Temperature regulator (80): Heater panel

Claims (7)

The first edge space 11 having a predetermined depth is formed on the upper surface 13 of the intermediate core material plate 10 according to the shape of the composite plate 20, A primary machining step of forming a predetermined distance from the edge (15) of the plate material for intermediate core material;
Forming a first rim (40) by injecting and curing a liquid resin into the first rim space (11) to form a first rim (40);
After the first edge forming step, the second edge space (12) is processed so that the first edge (40) is exposed on the lower surface (14) of the intermediate core board material so as to be equal to the first edge space step;
Forming a second rim (50) integral with the first rim (40) by injecting and curing the liquid resin into the second rim space (12);
Attaching the surface material (60) to the entire upper surface (13) and the lower surface (14) of the intermediate core board material after the second frame forming step;
The first and second edges 40 and 50 to which the outer core 16 and the surface member 60, which are positioned from the edge 15 of the intermediate core board material to the first and second edges 40 and 50, And a molding process step of forming a composite plate material (20) in which the frame molding (30) is integrally formed.
The method of claim 1,
The step of attaching the surface material further includes a sanding step of sanding and planarizing the upper surface 13, the lower surface 14, and the first and second edges 40 and 50 of the plate material for intermediate core material after the second frame forming step Wherein the composite sheet is made of a metal.
The method of claim 1,
The first rim forming step may be a single step or a single step in which a first rim 40 is formed by injecting and curing a liquid resin to each middle plate for a core material or a single step for forming a first rim 40 by using an injection port 18 to communicate with the first rim space 11. [ A plurality of intermediate core material plates 10 are stacked side by side so that the injection port 18 is located on the upper side and then the liquid resin is injected into each first edge space 11 through the injection port 18 Includes a multi-product primary stage,
The second rim forming step may be a single step secondary step for forming a second rim 50 by injecting and curing the liquid resin for each intermediate plate material, A plurality of intermediate core material plates are laminated side by side so that the injection port is located on the upper side and the second frame 50 is formed by injecting and curing the liquid resin into the respective second edge space through the injection port And a second step of manufacturing the composite sheet.
The method of claim 3,
The liquid phase resin has a viscosity of 10,000 to 30,000 cps (centi poise)
Wherein the multi-component primary step and the multi-component two shut-off step and the liquid resin have a viscosity of 500 to 1000 cps (centi-poise).
The method of claim 3,
Further comprising an intermediate partition wall (70) having heat lines (71) interposed between the plurality of intermediate lamination plates for lateral lamination and the multi-component primary cutting step and the multi-part two closing period.
The method of claim 3,
Wherein a heater panel (80) provided with a heat ray (81) is further provided on the outer surfaces of the plurality of laminated intermediate core board materials in the multi-product primary step and the multi-part 2 cutoff timing.
A composite sheet formed by the manufacturing method according to any one of claims 1 to 6.

Images