KR102074766B1 - Method and Apparatus for Manufacturing Quasi-incombustible EPS Board - Google Patents

Abstract

The present invention provides a method and an apparatus for coating an EPS board with a raw material liquid of a non-combustible material by an automatic process. According to the present invention, a flame retardant coating method of an EPS board comprises: a non-combustible material preparation step (S210) of mixing water, a binder, and a particulate non-combustible material in a large tank container; a non-combustible material transfer step (S220) of transferring the non-combustible material of the large tank container from the large tank container to a spraying device by a non-pumping action; an EPS board transfer step (S230) of continuously moving, on a transfer table, the EPS board in a horizontal direction; a non-combustible material spraying step (S240) of supplying the non-combustible material by spraying the same onto the surface of the EPS board with the spraying device; a non-combustible material flattening step (S250) of smoothly and evenly spreading the non-combustible material supplied to the surface of the EPS board; and a final drying step (S260) of obtaining a finished product by drying the non-combustible material smoothly spread on the surface of the EPS board through the non-combustible material flattening step (S250).

Description

Method and apparatus for manufacturing semi-combustible EP board {Method and Apparatus for Manufacturing Quasi-incombustible EPS Board}

The present invention relates to a method and apparatus for manufacturing a semi-combustible EP board, and more particularly, a quasi-non-flammable EP board product which is converted into a semi-combustible EP board product by working in a continuous process. The present invention relates to a method for producing a nonflammable ePS board and a manufacturing apparatus suitable for the method.

In general, EPS board (EPS Board) refers to a product made in the form of a board plate by molding a foam polystyrene in a block shape, and then cut to a certain thickness. This board is made by processing expanded polystyrene, and has good workability and very light characteristics.

In addition, since the EP board is manufactured by foaming the EP beads, it has a large number of micropores therein, which is excellent in insulation, and can effectively block noises and conversation contents coming from the outside. It was considered as insulation and noise prevention material of building, and is actually used as insulation of building.

On the other hand, since the PS board is vulnerable to fire and easily burned when exposed to fire, only the flame retardant PS board has been regulated to be used as a heat insulating material for buildings.

Today, the method of manufacturing flame retardant PS boards is divided into impregnation method using organic flame retardant and coating method using inorganic flame retardant based on flame retardant and flame retardant treatment method. can see.

An impregnation method using an organic flame retardant is a method of using organic materials including an organic halogen element as a flame retardant used in EP boards. This method appeared early in the process of pursuing flame retardancy of the EP board, using the characteristic that the organic halogen compound is inert, and added to the blowing agent during the polymerization of the styrene monomer, thereby creating the interior of the EP bead particles Was to impregnate the flame retardant directly. However, since this method generates more harmful gases harmful to the human body from the above organic halogen compounds contained in the EP board in case of fire, it is rarely utilized today.

The method of using inorganic flame retardant is divided into two ways. The inorganic flame retardant is coated on the surface of EPS beads, and then the flame retardant coated PS beads are foamed again to form the flame retardant ES board. It can be divided into a manufacturing method and a method of manufacturing a flame retardant PS board by making an EPS board and coating an inorganic flame retardant on the surface of the PS board. Regardless of the method, if a flame retardant PS board using an inorganic flame retardant is used as a heat insulating material of a building, even if a fire occurs, the inorganic flame retardant forms the barrier from the fire flame, so It is most widely used today because it prevents the exposure of the EP board to flame and also does not decompose inorganic flame or generate harmful gas.

We look at the beads-coating method for PS particles of inorganic flame retardant which is the most widely used today. This method is to coat the PS particles with an inorganic flame retardant, and then to foam the flame-retardant coated PS particles to produce a flame retardant PS product, there is an advantage that can produce a variety of molded products. However, EP is essentially a combination of organic compounds foaming polymer styrene molecules, so it is difficult to overcome the disadvantages of the weak flame.

On the other hand, the method of coating the inorganic flame retardant on the surface of the PS board itself (Board-coating Method) once pre-foaming the particles of the particles, and then foamed again in the inside of the block-type mold to manufacture the PS block, Thereafter, the ES block is cut to a predetermined thickness to convert to an ES board (plate), and then an inorganic flame retardant solution is coated on one or both surfaces of the ES board (plate), and the inorganic flame retardant solution is It may proceed in a drying manner.

By the way, in the case of a flame retardant PS board, a flame retardant is coated on the surface thereof, and the flame retardancy is good, but there is no method for producing such a flame retardant PI board in large quantities.

Surface treatment of the PS board with flame retardant means that the PS board itself has some degree of flame retardancy, and the outer surface is coated with the flame retardant or non-flammable agent again. You will be able to give you the best conditions to characterize.

However, in the present situation of the manufacture of EP boards, in order to coat the flame retardant on the surface of the EP board, the method of making the PS board once, coating the solution containing the flame retardant on the surface, and drying it again In general, the work is usually done manually, with the direct involvement of the workers, or only with small work tools.

Therefore, a method of uniformly coating a flame retardant or non-flammable on the surface of the PS board while proceeding in a large amount of work has not yet appeared.

Korean Patent Registration No. 10-1584697 (Registration Date: Jan. 13, 2016); Korean Patent Registration No. 10-1585614 (Registration Date: Jan. 14, 2016); Republic of Korea Patent Registration No. 10-1932077 (Registration Date: December 24, 2018); Republic of Korea Patent Registration No. 10-880905 (Registration Date: February 3, 2009)

The present invention is to solve the problems of the prior art, a method of manufacturing a semi-combustible EP board product by making it possible to coat the EP board in a continuous process without using a mechanical pump and its manufacture It is an object to provide a manufacturing apparatus suitable for the method.

Flame retardant coating method of the PS board according to the present invention, the step of preparing a non-combustible raw material for mixing and preparing water, a binder and a particulate non-combustible material in a large tank container (S 210); A transfer step of the non-combustible raw material for transferring the non-combustible raw material from the large tank container to the spray device by a pumpless action (S 220); A transfer step of the PS board for continuously moving the PS board in the horizontal direction on the transfer table (S 230); A spraying step (S 240) of the non-combustible raw material for supplying the non-combustible raw material by spraying on the surface of the EP board by the spraying device; A planarization step (S 250) of the non-combustible raw material for spreading and unfolding the non-combustible raw material supplied on the surface of the PS board; It comprises a; finish drying step (S 260) to dry the non-combustible raw material flattened on the surface of the PS board through the planarization step (S 250) of the non-combustible raw material and to obtain a finished product.

The preparation of the non-combustible raw material (S 210) is a step of preparing a raw material solution for imparting non-combustibility to the finished EPS board product by supplying on the surface of the PS board to form a semi-non-combustible layer (60). To this end, the large tank container 110 preferably contains 10 to 35 parts by weight of water, 35 to 80 parts by weight of inorganic non-flammable material, 10 to 25 parts by weight of the binder and 1 to 5 parts by weight of the dispersant.

The transfer of the non-combustible raw material (S 220) is a non-combustible raw material present in a uniform and proper solution state in the large tank container 110 in a state that does not use a mechanical pump, the non-combustible material from the large tank container 110 Raw material is safely transferred to the spray device (). To this end, the large tank container is connected to the discharge port 114 and the number of pipelines 120 and the number of the pipeline 120 corresponding to the discharge port 114 and more than three or less than 30 outlets on the outer peripheral portion near the bottom surface. The height h1 of one end coupled to the outlet 114 by one end of the pipeline 120 is the height h2 of the other end coupled to the sprayer 130 by the other end of the pipeline 120. In comparison, it should be located higher above the ground. The discharge port 114 preferably has an inverted U or inverted V shape.

The transfer step (S 230) of the ES board is a step to transfer the board products already cut into the PS board in a continuous process to be positioned below the spraying device 130. To this end, the EPS board products 50 can be carried out in a consistent process through the lower portion of the spraying device 130 by a conventional transfer device 70.

The spraying of the non-combustible raw material (S 240) is a step of uniformly spraying the non-combustible raw material on the surface of the EPS board product 50 supplied to the lower side of the spraying device 130 by a conventional transporting device 70 to be. To this end, while supplying the non-combustible raw materials using the spraying device 130, a plurality of spraying device 130 is arranged in the horizontal direction of the EPS board product 50, the inner space of each spraying device 130 It is preferable to supply the non-combustible raw material introduced into the gas by rapid reciprocating motion in the vertical direction of the piston part 135. The piston portion 135 is preferably installed to reciprocate in the vertical direction by the action of the cam portion 137 and the spring portion 136.

The flattening step (S 250) of the non-combustible raw material is a step of spreading the non-combustible raw material evenly sprayed on the surface of the EPS board product 50 in the previous step. To this end, it is preferable to use a scraper 140 installed spaced apart from the surface of the EPS board product 50. The height of the scraper 140 is installed to be freely adjustable.

The present invention after the flattening step (S 250) of the non-combustible raw material, while spreading the non-combustible raw material more uniformly on the surface of the EPS board product 50 using a spinning wheel 150, due to the rotational force of the rotor blades It is preferable to further add a pressing step (S 255) of the rotating wheel to apply a pressure to form a non-flammable layer 60 more firmly.

According to the present invention, the non-flammable layer 60 having a predetermined thickness may be evenly and uniformly coated on the surface of the conventional EPS board product 50 through the above-described steps.

In the case of using the manufacturing method and apparatus according to the present invention, there is an advantage that the non-flammable layer 60 having a predetermined thickness may be evenly and uniformly coated on the surface of the conventional EPS board product 50.

The manufacturing method according to the present invention has a merit of being excellent in productivity and economic efficiency since it can be proceeded very quickly compared to the conventional manual method.

In addition, since the PS board product manufactured by the present invention is uniformly and uniformly coated with the non-combustible layer 60, the flame retardancy of the product is homogeneous, and there is an advantage of obtaining a high quality product.

1 is a schematic block diagram of a manufacturing method of the present invention;
2 is a schematic conceptual view of a manufacturing method of the present invention;
3 is a schematic conceptual view of a large tank container suitable for the manufacturing method of the present invention,
4 is a sectional view of a main part of FIG. 3;
5 is a schematic conceptual view of an injection apparatus suitable for the manufacturing method of the present invention;
6 is an exemplary view illustrating a state in which the injectors of the present invention reciprocate in the horizontal direction in a set state,
7 is an exemplary view illustrating a state injected by the injectors of the present invention,
8 is a schematic conceptual view of a spinning wheel apparatus suitable for carrying out the manufacturing method of the present invention.

Hereinafter, the present invention will be described in more detail and in detail. Specific numerical values or specific examples provided in the present invention are preferred embodiments of the present invention, and are only intended to describe the technical spirit of the present invention in more detail, and the present invention is not limited thereto. In addition, in the specification of the present invention, a detailed description of parts that can be easily created by those skilled in the art as known in the art will be omitted. In addition, in the specification of the present invention, the horizontal direction means a direction perpendicular to the moving direction of the moving object, the vertical direction refers to the same direction as the moving direction of the moving object.

The present invention provides a method of manufacturing a quasi-incombustible EPS board in which the non-combustible layer 60 is formed by uniformly and uniformly coating inorganic non-combustible particles on the surface of the EPS board product 50.

1 is a schematic block diagram of a manufacturing method of the present invention.

The present invention includes preparing a nonflammable raw material (S 210) for mixing and preparing water, a binder, and particulate nonflammable material in a large tank container.

The preparing of the nonflammable raw material (S 210) is a step of preparing a nonflammable solution containing the inorganic nonflammable material to be supplied on the surface of the PS board as a main raw material, and preparing the liquid raw material solution having a homogeneous and water-soluble nonflammable solution.

In the present invention, it is preferable to prepare a raw material solution using the large tank container (110). To this end, the large tank container 110 preferably contains 10 to 35 parts by weight of water, 35 to 80 parts by weight of inorganic non-flammable material, 10 to 25 parts by weight of the binder and 1 to 5 parts by weight of the dispersant.

The present invention is to prepare a raw material solution using a large tank container 110, which is preferably stirred at a low speed in the range of low RPM to prevent the formation and phase separation of the non-combustible raw materials, and to suppress the generation of bubbles. Do.

The large tank container 110 has a cylindrical tank body 112, a motor (M) for supplying rotational force, a stirring blade 113 to rotate inside the tank body 112 by the motor, and A plurality of discharge ports 114 formed on the outer peripheral surface of the bottom surface of the tank body 112 is included. The tank body 112 is a container for supplying a raw material solution therein and reacting or kneading the inside of the tank body 112. The pressure supply 115 pressurizes nitrogen gas to the inside of the tank body 112 to supply the raw material solution inside the tank body 112 to be discharged to the outside through the outlet 114. To help.

The discharge port 114 is installed in the outer peripheral portion near the bottom surface of the tank body 112 is about 3 to 30, each discharge port 114 is centered on the center axis of the bottom surface of the tank body 112 Therefore, it is preferable that they are arranged in a radial form in the outer circumferential direction. If the number of the discharge port 114 is less than three, the number of the spray device 130 to be described below should be installed to less than three, in that case, closely spray the non-combustible raw material on the surface of the EPS board product 50 It is not preferable because it is not possible, and if the number of the outlet 114 is 30 or more, the number of the spraying device 130 is too large, it is not preferable because it is not possible to properly spray the non-combustible raw material on the surface of the EPS board product 50 Can not do it. Typically, since the width of the EPS board product 50 to be worked is about 120 centimeters standardized, the number of the spraying device 130 and the corresponding discharge port 114 is 10 to 20, more appropriately 12 to 16 is good. In the accompanying drawings, 15 outlets 114 are illustrated.

The discharge port 114 is formed in the outer peripheral portion near the bottom surface of the tank body 112, the shape is preferably made of an inverted U or inverted V shape. The outlet 114 forms one of the technical features of the present invention. The operating relationship of the outlet 114 can be efficiently proceeded by the shape of the inverted U or inverted V shape. When the discharge port 114 stops the discharge operation while discharging the non-combustible raw material from the tank body 112, it exhibits its true value as follows.

The discharge port 114 is discharged to the outside of the non-combustible raw material existing in the tank body 112 in conjunction with the pressure supply 115. During the discharge operation, when the pressure supply 115 pressurizes nitrogen gas to supply the tank main body 112, the non-combustible raw material inside the tank main body 112 is discharged to the outside through the discharge port 114. On the other hand, when the discharge operation is stopped, the nitrogen gas is not supplied from the pressure supply 115. In this case, the non-combustible raw material which is located below the center of the discharge port 114 in the direction of the tank main body 112 flows in the direction of the tank main body 112, while the tank main body ( The nonflammable material in the opposite direction to the outside of 112) flows outward. Therefore, the non-combustible raw materials do not remain inside the discharge port 114 and the pipeline 120 connected to the discharge port 114, thereby eliminating a separate cleaning operation.

Since the non-combustible raw material is contained in a high proportion of the inorganic material, it becomes one of the very difficult task to clean it after the operation, the present invention by making the shape of the outlet 114 by inverted U or inverted V The technical problem is solved.

The nonflammable raw material to be introduced into the tank body 112 preferably includes 10 to 35 parts by weight of water, 35 to 80 parts by weight of inorganic nonflammable material, 10 to 25 parts by weight of the binder, and 1 to 5 parts by weight of the dispersant.

Water serves as a solvent for the inorganic non-combustibles in an aqueous solution, and allows the inorganic non-combustibles to be uniformly mixed.

The inorganic nonflammable material is a powder or particulate inorganic material, and inorganic particles which do not burn even when exposed to a flame are preferable. The inorganic nonflammable material is expanded graphite, aluminum hydroxide, magnesium hydroxide, iron oxide, antimony oxide, zinc stannate, red, ammonium phosphate, polyammonium phosphate, ammonium polyphosphate, molybdate, zirconium, melamine powder, melamine cyanurate, cyanuric acid Any one or two or more selected from the group consisting of, melamine phosphate, dimelamine phosphate and melamine pyrophosphate may be used.

The binder is sufficient as a binder for bonding the inorganic non-combustible material to the surface of the EPS board product 50, there is no need to specifically limit it. As said binder, since an aqueous solvent is used, an aqueous binder is more preferable. EVA is most preferred as the aqueous binder.

The dispersant is for evenly dispersing the inorganic nonflammable material in the aqueous solvent, and there is no need to specifically limit it. Surfactant can be used as a dispersing agent. Surfactants include silicone-based surfactants having polydimethylsiloxane and polyoxyalkylene chains, anionic surfactants such as fatty acid salts, sulfuric acid ester salts, phosphate ester salts, sulfonate salts and the like.

In the present invention, the water, the inorganic nonflammable material, the binder, the dispersant, and the like are added to the tank body 112, and the motor M is operated to knead gradually. Rotational speed is preferably maintained at about 10 to 50 RPM, preferably not exceeding 100 RPM. If it is too slow below 10 RPM, the kneading condition is not good and takes a long time, while if it is faster than 100 RPM, it may be difficult to adjust the kneading state such as foaming. In the present specification, a raw material solution in which raw materials are kneaded in the tank body 112 is referred to as a nonflammable raw material.

The present invention includes a transfer step (S 220) of the non-combustible raw material for transporting the non-combustible raw material to the spray device by a pumpless action in a large tank container.

The transfer of the non-combustible raw material (S 220) is a non-combustible raw material is safely moved to the target point, without using a mechanical pump that is commonly used in the tank body 112 or the large tank container 110, commonly used. Let's do it. In the present invention, it is more preferable not to use a pump that is commonly used, and as a reason, various kinds of inorganic particles contained in the components of the non-combustible raw materials are different in specific gravity, and the strength of the particles is high, so that the transfer When the pump is used, fine phase separation may occur during the transfer, and more seriously, since the inorganic particles cause problems in the durability of the pump, these points are comprehensively considered.

The present invention, for this purpose, pressurized nitrogen gas in the pressure supply 115 to supply to the tank body 112, the non-combustible raw material in the tank body 112 through the pipeline 114 through the outlet (114) 120). Since the pipeline 120 is installed downward, the non-combustible raw material passing through the vertex of the discharge port 114 naturally flows downward, and finally reaches the injection hole 132 of the spray device 130. Done.

According to the present invention, in the tank body 112, three or more and less than thirty outlets 114 and the same number of pipelines 120 are connected to the outlets 114 at the outer peripheral portion near the bottom surface. However, the height h1 of one end of the pipeline 120 is installed to be located higher from the ground than the height h2 of the other end of the pipeline 120. Installing the height h1 of one end to a higher position than the height h2 of the other end utilizes potential energy due to the height difference to move the non-combustible raw material in the pipeline 120. For sake. The discharge port 114 preferably has an inverted U or inverted V shape. The reason is as described above.

The transfer of the nonflammable raw material (S 220) is the nonflammable raw material naturally along the three to thirty outlets 114 and three to thirty pipelines 120 connected to one large tank container (110) It is desirable to not use a mechanical pump in the process. In some cases, a mechanical transfer pump may be used, but in this case, since the mechanical pump may be easily damaged due to the inorganic particles contained in the non-combustible raw material, the tank body may be used without using mechanical energy by the pump. This is to use the potential energy due to the difference in the installation position between the 112 and the spray device 130.

The present invention includes a transfer step (S 230) of the PS board for continuously moving the EPS board product 50 in the horizontal direction on the transfer device (70).

The transfer step S230 of the PS board is a step of transferring the EPS board products 50 already cut into the PS board in a continuous process so as to be positioned below the spraying device 130. To this end, the EPS board products 50 can be carried out in a consistent process through the lower portion of the spraying device 130 by a conventional transfer device 70.

The transfer device 70 includes a transfer belt 72 for moving the EPS board product 50 in a horizontal direction, a plurality of idle rollers 74 for moving while rotating the transfer belt in an endless track, and a loading end. The board includes a board automatic inserter for pushing the EPS board products 50 one by one to move to the transfer belt (72). Such a transfer device 70 can be used as it is or slightly modified product that is commonly used in the art.

When the board automatic feeder pushes the EPS board products 50 one by one from the loading end and moves them to the transfer belt 72, the transfer belt 72 moves the EPS board products 50 placed thereon in the horizontal direction. To the bottom, and the EPS board product 50 is transferred directly to the bottom of the spraying device 130, and continues to move, to move in the direction of the scraper 140 and the spinning wheel 150.

The present invention includes a spraying step (S 240) of the non-combustible raw material for supplying by spraying the non-combustible raw material on the surface of the EPS board product 50 by the spraying device 130.

The spraying step (S 240) of the non-combustible raw material is a step of supplying by spraying the non-combustible raw material evenly on the surface of the EPS board product 50 supplied to the bottom of the spraying device (130).

In the present invention, in order to smoothly perform the spraying step (S 240) of the non-combustible raw material, it is preferable to use a spray device 130 suitable for the manufacturing method of the present invention.

The spray device 130 has a cylindrical body 131, an injection hole 132 into which the non-combustible raw material is injected, an injection discharge port 133 for discharging the non-combustible raw material, the injection hole 132, and the injection discharge port 133 ) And a space portion 134 for storing the non-combustible raw material in a moment for a moment and then sent to the outside, and a piston portion 135 for reciprocating in the vertical direction in the body 131, The spring part 136 provided in the upper outer periphery of the piston part 135, and the cam part 137 which rotates at high speed by an external motor are included.

In the spraying device 130, the cylindrical body 131 is generally cylindrical, the inside is empty, the upper end is open, but the lower end has a jet discharge port 133 is formed. Through the injection discharge port 133, the non-combustible raw material remaining in the space portion 134 is discharged while being injected to the outside by the rapid up and down movement of the piston (135). The piston 135 is quickly reciprocated in the vertical direction by the fast rotating cam 137, in the process to push the non-combustible raw material filled in the space 134 to the injection discharge port 133 Is given.

The spraying device 130 is preferably set to a plurality of 3 to 30 as a set, arranged in a line along the width of the EPS board product 50. The plurality of spraying devices 130 forming the set are arranged in the horizontal direction perpendicular to the direction in which the EPS board product 50 to be worked, the piston unit 135 of each spraying device 130 It is preferable to supply a non-flammable raw material to the surface of the EPS board product 50 by quickly reciprocating).

The one set of spraying device 130 is preferably to perform a reciprocating motion in the range of 5 millimeters to 20 millimeters in the horizontal direction with respect to the traveling direction of the EPS board product 50 to be worked. In this case, the non-combustible raw material is injected in a zigzag manner on the surface of the EPS board product 50 moving below. When the non-combustible raw material is discharged and injected in a zigzag manner, there is an advantage that the flat operation can be performed more efficiently in flattening the non-combustible raw material in the next step.

FIG. 3 shows a state in which the non-combustible raw material is sprayed onto the surface of the EPS board product 50 by the piston part 135.

The present invention includes a planarization step (S 250) of the non-combustible raw material for unfolding and unfolding the non-combustible raw material supplied on the surface of the EPS board product 50.

The planarization step (S 250) of the non-combustible raw material is a step of unfolding and deploying the non-combustible raw material evenly sprayed on the surface of the EPS board product 50 in the previous step. To this end, it is preferable to use a scraper 140 installed spaced apart from the surface of the EPS board product 50. The scraper 140 fills a portion where the non-flammable material is not well applied or is applied unevenly, thereby spreading the non-flammable material more evenly on the surface of the EPS board product 50. The height of the scraper 140 is installed to be freely adjustable.

The present invention, after finishing the flattening step (S 250) of the non-combustible raw material, while spreading the non-combustible raw material more uniformly on the surface of the EPS board product 50 using a spinning wheel 150, the EPS board product ( It is preferable to further add a pressing step (S 255) of the rotating wheel to make the non-flammable layer 60 more firmly on the surface of 50).

Pressing the rotating wheel (S 255) is not only to spread the nonflammable raw material more uniformly to the surface of the EPS board product 50 after the first planarization work, but also a harder and more rigid non-flammable layer ( 60). To this end, the spinning wheel 150 is installed on the rotating shaft 152 a plurality of front wheel spinning blades 153, to be spaced apart from each other in the axial direction, the plurality of rear wheel spinning blades 155 spaced apart It is preferable to install the corresponding distances with respect to the set distances.

The front wheel spinning blade 153 and the rear wheel spinning blade 155 is preferably formed by gently bending a thin sheet of stainless steel curved in the form of an S-line. The front wheel spinning blade 153 and the rear wheel spinning blade 155 are coupled to each other by a thin beat, and through this coupling relationship, when the rotating shaft 152 of the rotary wheel rotates one degree of 360 degrees, the EPS On the surface of the board product 50, there is no empty space, and the front wheel spinning blade 153 and the rear wheel spinning blade 155 are both in surface contact and simultaneously pressurized.

Pressing of the rotating wheel (S 255) is the same way as the letter S letter or the letter S letter reversed with respect to the direction in which the front front wheel spinning blade 153 and the rear front wheel spinning blade 153 rotates. It is preferable to make surface contact while pressing the surface of the EPS board product 50. Naturally, the rotating shaft 152 is rotated by a motor not shown.

The present invention includes a finish drying step (S 260) of drying the nonflammable material spread flat on the surface of the PS board through the planarization step (S 250) of the non-combustible raw material and to obtain a finished product. The drying method may be carried out in a conventional manner, and there is no need to specifically limit it. It can be carried out in a large drying room, or it can be hot air dried or air dried in a narrow room.

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

<< Example 1 >>

A reactor was prepared, and 25 kg of water, 35 kg of expanded graphite, 5 kg of iron oxide, 20 kg of ammonium phosphate, 10 kg of EVA resin, and 5 kg of dispersion stabilizer were added to the inside of the reactor, and stirred at 15 rpm to obtain a nonflammable raw material. The non-combustible raw materials were transferred to a piston forced injection device having a set of 15 injection devices, and sprayed onto the EPS board surface. At this time, the injection amount of the non-combustible raw material was adjusted to 4kg / min.

The nonflammable raw material sprayed in a zigzag manner on the surface of the EPS board was first spread with a scraper, and then the second planarization operation was performed through a spinning wheel. At this time, the width of the EPS board was 120 centimeters, the length in the direction of travel was 60 centimeters, the thickness was 50 millimeters. In addition, the rotation speed of the spinning wheel was 60 rpm.

The final product formed a thin layer of nonflammable layer on the surface of the EPS board, and the thickness of the nonflammable layer was measured to be 0.6 millimeter.

<< Example 2 >>

In Example 1, the thickness of the EPS board was 100 millimeters, and the other conditions were the same.

The final product formed a thin layer of nonflammable layer on the surface of the EPS board, and the thickness of the nonflammable layer was measured to be 0.6 millimeter.

<< Example 3 >>

In Example 1, the thickness of the EPS board was 150 millimeters, and the other conditions were the same.

The final product formed a thin layer of nonflammable layer on the surface of the EPS board, and the thickness of the nonflammable layer was measured to be 0.6 millimeter.

<< Example 4 >>

In Example 1, the thickness of the EPS board was 200 millimeters, and the other conditions were the same.

The final product formed a thin layer of nonflammable layer on the surface of the EPS board, and the thickness of the nonflammable layer was measured to be 0.6 millimeter.

<< Example 5 >>

In Example 1, the thickness of the EPS board was 250 millimeters, and the other conditions were the same.

The final product formed a thin layer of nonflammable layer on the surface of the EPS board, and the thickness of the nonflammable layer was measured to be 0.6 millimeter.

<< Example 6 >>

In Example 1, the thickness of the EPS board was 100 millimeters, wherein the injection amount of the non-combustible raw material was adjusted to 6kg / min, other conditions were the same.

The final product was formed with a thin nonflammable layer on the surface of the EPS board, the thickness of which was measured to be 0.8 millimeter.

<< Example 7 >>

In Example 6, the thickness of the EPS board was 200 millimeters, wherein the injection amount of the non-combustible raw material was adjusted to 6 kg / min, and the other conditions were the same.

The final product was formed with a non-flammable layer of thin film on the surface of the EPS board, the thickness of the non-flammable layer was measured to be 0.8 millimeter.

<< Example 8 >>

In Example 6, the thickness of the EPS board was 250 millimeters, wherein the injection amount of the non-combustible raw material was adjusted to 6kg / min, the other conditions were the same.

The final product was formed with a thin nonflammable layer on the surface of the EPS board, the thickness of which was measured to be 0.8 millimeter.

According to Examples 1 to 5, irrespective of the thickness of the EPS board to proceed with the operation, if the input amount of the non-flammable material injected through the injector is the same, the resulting thickness of the non-combustible layer is It can be seen that the same.

In addition, although it is naturally considered to be predictable, it can be seen that the thickness of the non-combustible layer also increases as the input amount of the non-combustible raw material increases, as confirmed by Examples 6 to 8.

As a result, it can be seen that the thickness of the non-combustible layer can be freely adjusted according to the demand forecast of the operator or the request of the orderer, and thus the degree of semi-combustibility of the product can be adjusted.

In addition, it turns out that it was possible to newly confirm that a large amount of high-quality products can be produced by using an automatic machine, without relying on manual methods of workers as in the related art.

Although the flame retardant coating method and apparatus of the PS board according to the present invention have been described in detail, this is only specified in the process of describing the embodiment of the present invention, and all the features of the present invention are applied only to the items mentioned above. It should not be construed as limited.

In addition, anyone of ordinary skill in the art will be able to make various modifications and imitations according to the description of the specification of the present invention, but it will be apparent that this is also outside the scope of the present invention.

110: large tank container, 112: tank body,
113: stirring blade, 114: outlet,
115: pressure supply, 120: pipeline,
130: spraying device, 132: inlet,
133: jet discharge outlet, 134: space part,
135: piston part, 136: spring part,
137: cam portion, 140: scraper,
150: spinning wheel device, 152: rotating shaft,
153: front rotary blade, 155: rear rotary blade

Claims (17)

Preparing a non-combustible raw material for mixing and preparing water, a binder, and a particulate non-combustible material (S 210); A transfer step of the non-combustible raw material for transferring the non-combustible raw material (S 220); A transfer step of the PS board for moving the PS board on the transfer table (S 230); An injection step (S 240) of the non-combustible raw material for supplying the non-combustible raw material by spraying on the surface of the PS board; A planarization step (S 250) of the non-combustible material which spreads the non-combustible material evenly on the surface of the PS board; In the method comprising a; drying step (S 260) for drying the non-combustible raw material on the surface of the EP board
The preparation of the non-combustible raw material (S 210) is carried out using a large tank container 110 having three to thirty outlets 114 so as to be radially symmetrical to the outer periphery near the bottom of the tank body 112. Become,
The spraying step (S 240) of the non-combustible raw material proceeds by forming a number of spraying apparatus 130 corresponding to the discharge port 114 in one set, and the spraying apparatus 130 in the traveling direction of the PS board. In a state arranged in a direction perpendicular to the relative, the piston portion 135 proceeds by reciprocating rapidly,
The planarization step (S 250) of the nonflammable raw material proceeds to the first planarization operation using the scraper 140, and then, the plurality of front wheel spinning blades 153 and the plurality of rear wheel spinning blades ( 155) to proceed with the second planarization operation using the spinning wheel device 150 configured
A flame retardant coating method for a semi-combustible EP board characterized in that.
The method of claim 1,
Preparation of the non-combustible raw material (S 210) is performed using a large tank 110,
The large tank container 110 includes 10 to 35 parts by weight of water, 35 to 80 parts by weight of inorganic nonflammable material, 10 to 25 parts by weight of the binder and 1 to 5 parts by weight of the dispersant,
In the process of stirring the raw materials, stirring at a low speed in the range of 10 to 100 rpm to prevent the precipitation and phase separation of the inorganic non-combustible material, and to suppress the generation of bubbles
A flame retardant coating method of a semi-flammable EP board characterized in that.
The method of claim 2,
The inorganic nonflammable material is a particulate inorganic material which does not burn even when exposed to a flame. Using one or more selected from the group consisting of zirconium, melamine powder, melamine cyanurate, cyanuric acid, melamine phosphate, dimelamine phosphate, melamine pyrophosphate
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 2,
The large tank container 110
Tank body 112 and the cylindrical shape,
A stirring blade 113 rotating inside the tank body 112 by a motor M,
A plurality of discharge port 114 formed on the outer peripheral surface of the bottom surface of the tank body 112,
The pressure supply 115 is installed in the upper portion of the tank body 112
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 4, wherein
The outlet 114 is connected to the same number of pipelines 120, respectively,
The height h1 of one end of the pipeline 120 is installed to be located higher from the ground than the height h2 of the other end of the pipeline 120.
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 5, wherein
By installing the height (h1) of one end of the pipeline 120 to be located higher than the height (h2) of the other end, the location of the non-combustible raw materials in the interior of the pipeline 120, the position by the height difference To move naturally by energy
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 6,
The non-combustible raw material is moved without a force, without using a mechanical pump
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 7, wherein
The non-combustible raw material is discharged from the inside of the tank body 112 to the outside through the discharge port 114 by pressurizing nitrogen gas in the pressure supply 115 to supply to the tank body 112 during the discharge operation,
When the discharge operation is stopped, nitrogen gas is not supplied from the pressure supply 115, and some non-combustible raw material flows in the direction of the tank body 112 about the vertex of the discharge port 114. On the other hand, the remaining part of the non-combustible raw material is to flow down to the outside of the tank body 112, so that the non-combustible raw material does not remain inside the outlet 114 and the pipeline 120
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method according to any one of claims 1, 4, 5 and 8,
The outlet 114 is coupled to the bottom portion of the tank body 112 in a state of forming an inverted U or inverted V shape
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 1,
The spraying step (S 240) of the non-combustible raw material is performed by a spray device 130,
The spray device 130 is
Cylindrical body 131,
Inlet 132 and the non-combustible raw material is injected,
A jetting outlet 133 through which the non-combustible raw material is discharged;
A space part 134 existing between the injection hole 132 and the injection discharge port 133 and storing the non-combustible raw material for a while and sending it to the outside;
A piston unit 135 reciprocating upward and downward in the body 131,
A spring part 136 installed on an upper outer circumference of the piston part 135;
It includes a cam portion 137 that rotates at a high speed by an external motor
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 10,
The spray device 130 is
3 to 30 many in one set,
It is used to install and arrange in a line along the width of the EPS board product 50 to be worked
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 11,
The spray device 130 is
Arranged in the horizontal direction perpendicular to the direction in which the EPS board product 50 proceeds,
By spraying the non-combustible raw material in a zigzag manner to the surface of the EPS board product 50 by performing a reciprocating motion in the range of 5 mm to 20 mm in the horizontal direction with respect to the traveling direction of the EPS board product 50.
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 12,
The spray device 130 is
The non-flammable material is sprayed on the surface of the EPS board product 50 in a zigzag manner, and by the scraper 140 to evenly and uniformly spread the non-flammable material present on the surface of the EPS board product 50.
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 13,
After the first planarization work by the scraper 140,
The second flattening operation is performed by the spinning wheel 150,
The spinning wheel 150 is
A plurality of front wheel spinning wheels 153 and a plurality of rear wheel spinning wheels 155 are installed on the rotation shaft 152, and the plurality of front wheel spinning wheels 153 and the plurality of rear wheel spinning wheels 155 are each other. Are installed so as to be spaced apart in the axial direction, and that they are installed to correspond to each other for the distance
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 14,
The front wheel spinning blade 153 and the rear wheel spinning blade 155 is in contact with the surface while pressing the surface of the EPS board product 50 in the same manner as the letter S letter or inverted method of the letter S letter with respect to the direction of rotation To do
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 15,
The front spinning wheel 153 and the rear spinning wheel 155
It is formed by gently bending a thin sheet of stainless steel into an S-line curved surface.
A flame retardant coating method of a semi-combustible EP board characterized in that the.
The method of claim 16,
The front spinning wheel 153 and the rear spinning wheel 155
When the rotary shaft 152 of the spinning device 150 is rotated one degree of 360 degrees through the coupling relationship, through the coupling relationship, all of the surface of the EPS board product 50 without the empty space The front wheel spinning blade 153 and the rear wheel spinning blade 155 to be in contact with the surface at the same time being pressed
A flame retardant coating method of a semi-combustible EP board characterized in that the.

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