Manufacturing method of heat insulation sheet and heat insulation sheet manufactured by using method

Abstract

The invention provides a manufacturing method of a heat insulation sheet and the heat insulation sheet manufactured by the method. The manufacturing method of the heat insulation sheet comprises the steps of exposing one surface of a first film through a first unwinder and conveying the first film in a process direction; a step of applying a coating material on one surface of the first thin film; a step in which one surface of the first film is in surface contact with a second film supplied by a second unwinder and passes through a pressure roller to form a first bonded object; a step of winding the first bonding object on a winding device; mounting the first laminating object wound on the winding device on a first unwinding device, exposing the other surface of the first laminating object through the first unwinding device, and conveying the first laminating object along the process direction; a step of applying a coating material on the other surface of the first bonded object; a step of forming a second laminated object by contacting the other surface of the first laminated object with a third film surface supplied by a second unwinder and passing the third film surface through a pressure roller; and a step of winding the second bonding object on the winding device.

Description

TECHNICAL FIELD

[0001] The present invention relates to a method of manufacturing a thin thermal insulation sheet having no thickness deviation, and particularly, to a device for laminating and fusing thermal insulation members each having a material that is not fused by heating or flame fusion of a different material, and a thermal insulation sheet manufactured thereby. BACKGROUND

[0002] Thermal insulation materials, which are building materials having a thermal insulation function, are used between an interior wall and an exterior wall of a building, or on an interior wall or an exterior wall, and prevent heat loss in a room by delaying and blocking heat transfer between the interior and the exterior caused by conduction, convection, and radiation phenomena, thereby minimizing energy consumption for heating and cooling. In general, thermal insulation materials are mainly used in the form of foamed resins of various organic materials such as polystyrene foamed material, polypropylene foamed material, polyethylene foamed material, or the form of long fiber or short fiber nonwoven fabric of organic fiber series made of polypropylene fiber or polyethylene fiber, or the form of nonwoven fabric of inorganic fiber series such as felt, glass long fiber, glass wool, etc.

[0003] As a method of manufacturing thermal insulation materials, in order to fuse foamed cotton such as EVA (ethylene-vinyl acetate copolymer) foam, PE (polyethylene) foam, PP (polypropylene) foam, etc. having a thickness of a predetermined thickness or more with a PET foil, a lamination and fusion roll pressing method using heat and flame is widely used, which heats the foamed cotton at a temperature of a predetermined temperature or more to melt and fuse the foamed cotton on the PET foil.

[0004] However, since the lamination method using heat and flame requires melting the foamed cotton material itself to achieve fusion, there is a problem that surface form deformation (e.g., wrinkles, color change, or form change, etc.) inevitably occurs. In addition, for this method, temperature adjustment for melting the foamed cotton (EVA, PE foam, PP foam, etc.) is very important, and with a change in the intensity and temperature of flame heat, the thickness deviation of the foamed cotton can be very serious, and the surface of the sheet can be directly damaged, so there is a problem that the printed film layer is affected. In addition, since the lamination method using heat and flame is also affected by the temperature of the surrounding environment, fine work is required, and if temperature adjustment or roll gap adjustment is inconsistent, the possibility of peeling of the bonded layer is high, so there are many causes of defects, and there is a problem of reduced productivity of products.

[0005] In addition, in order to be widely used in various industrial construction sites, the thermal insulation material needs to be combined with various materials. However, in the conventional method, if a material that is not melted by flame and heat is not used, fusion is difficult to achieve, and materials with different properties from each other cannot be multi-layered, so there are limitations in that the application of materials for manufacturing the thermal insulation material cannot be variously combined. SUMMARY

[0006] Problems to be Solved by the Invention

[0007] The present invention has been made to solve the above problems, and an object of the present invention is to provide a manufacturing method for producing a thermal insulation sheet (thermal insulation material, thermal insulation wallpaper, thermal insulation pad, waterproof layer protection material for buildings and underground structures, and various indoor and outdoor finishing materials or root protection materials, etc.) and a high-speed coater for performing the method, which can fuse even materials with different functions, and thus can produce a sheet using different materials according to needs, and in particular, to provide a method for producing a thin sheet even when a plurality of materials needs to be laminated, and can produce a high-quality sheet since the lamination can be performed with minimized thickness deviation.

[0008] Means for Solving the Problems

[0009] The manufacturing method for a thermal insulation sheet according to the present invention includes and performs the following steps: a first conveying step of exposing a first film to one surface by a first unwinder and conveying in a process direction; a first coating material application step of applying a liquefied resin coating material between the one surface of the first film and a second film supplied by a second unwinder in a high-speed coating manner; a first lamination step of bringing the one surface of the first film into contact with the second film supplied by the second unwinder and forming a first laminate by a press roller; a first winding step of winding the first laminate on a winder; a second conveying step of mounting the first laminate wound by the winder on the first unwinder, exposing the first laminate to the other surface by the first unwinder, and conveying in the process direction; a second coating material application step of applying a liquefied resin coating material between the other surface of the first laminate and a third film supplied by a second unwinder in a high-speed coating manner; a second lamination step of bringing the other surface of the first laminate into contact with the third film supplied by the second unwinder and forming a second laminate by the press roller; and a second winding step of winding the second laminate on a winder.

[0010] At this time, a preheating step of preheating the first film wound by the first unwinder to a predetermined temperature at which the raw material is not melted is further performed before the first conveying step is performed.

[0011] At this time, a scraping step of forming fine grooves or fine cracks on the surface of the first film is further performed after the preheating step is performed.

[0012] Also, the coating material is at least one material of liquid PE (polyethylene), PP (polypropylene), EVA (ethylene-vinyl acetate copolymer), and PVC (polyvinyl chloride).

[0013] In addition, the first film is configured in a nonwoven fabric form, and the nonwoven fabric form is configured by at least one material of EVA (ethylene-vinyl acetate copolymer), PE foam (polyethylene foam), PP foam (polypropylene foam), and an organic fiber series.

[0014] At this time, the first film can have a thickness of 0.1 mm to 5 mm.

[0015] In addition, the second film is a film on which a printing layer is coated on any one or more of a PET (polyethylene terephthalate) film, an LLDPE (linear low-density polyethylene) film, a CPP (cast polypropylene) film, a PVC (polyvinyl chloride) film, a PU (polyurethane) film, a PU artificial leather (polyurethane artificial leather) film, and a PE (polyethylene) film, or the second film is an OPP (o-phenyl phenol) film.

[0016] At this time, the third film is an aluminum film or a PET foil film, an OPP (o-phenyl phenol) foil film, a CPP (cast polypropylene) foil film, an LLD foil film, or a high-density polyethylene foil film (HDPE GREY).

[0017] In addition, the second laminate is a thermal insulation sheet in which the second film, the first film, and the third film are sequentially laminated from one side.

[0018] Also, a release paper attachment step of attaching a release paper to the other surface of the second laminate by an adhesive is further performed after the second winding step is performed.

[0019] At this time, a bonded thermal insulation sheet in which the second film, the first film, the third film, and a release paper are sequentially laminated from one side is manufactured by a manufacturing method of the thermal insulation sheet.

[0020] In addition, a rapid drying step of rapidly drying the coating material that is not dried between the laminates can be further included before at least any one of the first winding step and the second winding step is performed.

[0021] The insulation sheet manufactured by the manufacturing method of the insulation sheet is sequentially laminated with the second film, the first film and the third film from one side, the coating material is composed of at least one or more of liquid PE (polyethylene), PP (polypropylene), EVA (ethylene-vinyl acetate copolymer) and PVC (polyvinyl chloride), the coating material is applied to each of the second film and the first film of different materials from each other, and the first film and the third film are cured after the coating material is applied to the first film and the third film, so that the second film, the first film and the third film are attached to each other.

[0022] In addition, the insulation sheet is configured as an attached insulation sheet which is additionally laminated with a release paper on the other side of the third film, and the attached insulation sheet is attached to a construction site through the other surface of the release paper and is constructed.

[0023] Invention Effects

[0024] The manufacturing method of the insulation sheet according to the above-described structure and the high-speed coater for performing the method can fuse films of different materials from each other using the high-speed coater, so that the films of different materials can be combined and manufactured according to a demand, so that the effect of the insulation sheet can be maximized, or materials suitable for different fields and construction sites can be manufactured, and can be smoothly produced at a predetermined thickness without wrinkles or color changes, a high-quality insulation sheet can be manufactured, and even if the materials are more than three layers, the materials can be manufactured in a thin thickness by lamination, attachment and fusion, so that an overlapping construction method is possible, and an insulation sheet which is convenient for construction can be manufactured, and in particular, during manufacturing, high-speed rotation can be performed, so that the production speed can be increased while reducing labor costs, and the process productivity can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural view of a high-speed coater according to an embodiment.

[0026] Figure 2 is a structural view of a coating unit according to an embodiment.

[0027] Figure 3 is a first working view of a supply unit and a coating unit according to an embodiment.

[0028] Figure 4 is a second working view of a supply unit and a coating unit according to an embodiment.

[0029] Figure 5 is a first flowchart of a manufacturing method of an insulation sheet according to an embodiment.

[0030] Figure 6 is a conceptual view of a manufacturing method of an insulation sheet according to an embodiment.

[0031] Figure 7 is a second flowchart of a manufacturing method of a heat shield according to an embodiment.

[0032] Figure 8 is a conceptual diagram of a scraping step according to an embodiment.

[0033] Figure 9 is a structural diagram of a heat shield according to an embodiment.

[0034] Figure 10 is a conceptual diagram of a manufacturing method of an attached heat shield according to an embodiment.

[0035] Figure 11 is a conceptual diagram of a manufacturing method of a heat shield according to another embodiment.

[0036] Explanation of Reference Numerals

[0037] 10: heat shield

[0038] 11: first film; 12: second film

[0039] 13: third film; 14: coating material

[0040] 15: release paper

[0041] 100: high-speed coater

[0042] 110: first unwinder; 120: resin supply part

[0043] 130: second unwinder; 140: pressurizing roller

[0044] 150: winder; 160: preheating part

[0045] 170: third unwinder

[0046] 180: adhesive supply part

[0047] 190: rapid dryer DETAILED DESCRIPTION

[0048] Hereinafter, the technical idea of the present application will be described in more detail with the attached drawings. Before that, the terms or words used in the present specification and claims should not be interpreted as being limited to the meanings or dictionary meanings, but should be interpreted as meanings and concepts conforming to the technical idea of the present application based on the principle that the inventor appropriately defines the concepts of the terms in order to most appropriately explain his own application.

[0049] Therefore, the structure shown in the examples described in the present specification and the drawings is only the most preferred embodiment of the present application, and does not represent the technical idea of the present application, and it should be understood that at the time of filing the present application, there can be various modifications that can be substituted.

[0050] Hereinafter, the technical idea of the present application will be more specifically described using the attached drawings. The drawings are only an example to more specifically describe the technical idea of the present application, and the technical idea of the present application is not limited to the form of the drawings.

[0051] In the case of the thermal insulation sheet 10 to be manufactured according to the present application, by attaching and bonding the thermal insulation sheet 10 on the outer wall of a building, a parking lot, a roof floor, or a waterproof layer surface constructed on a floor surface, it can be used to defend against the damage and impact applied from the outside to the waterproof layer. In particular, the thermal insulation sheet 10 of the present application has an excellent thermal insulation function, and can effectively prevent the moisture or condensation phenomenon generated due to the temperature difference between the ceiling and the outer wall, and by being attached to the surface of the waterproof layer, it can play a double waterproofing role based on the coating effect, and has the characteristics of protecting the waterproof layer and achieving the thermal insulation effect. At this time, the thermal insulation sheet 10 can be manufactured using a synthetic resin film or a nonwoven fabric such as inorganic and organic materials.

[0052] Unlike the past, the present application relates to a method of manufacturing a thin thermal insulation sheet 10 having a thin thickness and being easy to construct, and a high-speed coater 100 for performing the method. Therefore, the present application is characterized in that it relates to a manufacturing method of manufacturing a thermal insulation sheet 10 by laminating and fusing thin films of various materials using a high-speed coater 100, and an apparatus for performing the method. The manufacturing method and the manufacturing apparatus of the present application can manufacture a thermal insulation sheet 10 having a uniform surface and not having a poor fusion or a poor thickness deviation due to the properties of the materials, and has the effect of improving the economy by improving the production speed in the manufacturing process.

[0053] The present application is characterized in that a high-speed coater is used as an apparatus for manufacturing a thermal insulation sheet 10. Referring to Figure 1 and will be described, the high-speed coater 100 of the present application includes a supply part including a first unwinder 110 in which a raw material is wound, the raw material being supplied in a certain direction along a process direction through the first unwinder 110; a coating part including a resin supply part 120 that supplies a coating material 14 in a liquid state, the resin supply part 120 coating the coating material 14 on the raw material at a high speed and uniformly; a bonding part including a second unwinder 130 in which a bonding raw material to be bonded to the raw material is wound, the bonding raw material being supplied in a direction in which the raw material of the supply part is in surface contact through the second unwinder 130, and the raw material and the bonding raw material in surface contact being passed through a press roller 140 and being bonded; and a winding part winding a bonded product formed through the bonding part by a winder 150.

[0054] Referring to Figure 1 , the supply section includes a first unwinder 110 through which the wound raw material is released to move in a certain direction in a process direction. The supply section is characterized in that the mounting is achieved in such a way that one surface of the raw material mounted on the first unwinder 110 is exposed to the outside and moves. At this time, the one surface of the raw material is preferably a surface on which the coating material 14 is coated by the coating section. The supply section can include a conveying device for conveying the raw material, and the conveying device can be a conveyor belt. Thus, the supply section is characterized by a structure in which the wound raw material on the first unwinder 110 is mounted and the raw material moves in a state in which one surface is exposed in the process direction in a certain direction along the conveyor belt.

[0055] The supply section can further include a preheating section 160 to preheat the supply section at a predetermined temperature. The preheating section 160 is preferably configured to preheat the raw material mounted on the supply section. At this time, the preheating section 160 preheats at a temperature that is not a degree at which the raw material is melted. That is, the preheating section 160 preferably preheats the raw material to a temperature to an appropriate degree (a degree at which the raw material can be preheated) to ensure that the process of the raw material can be smoothly performed.

[0056] The coating section includes a tank 121 to contain the liquid coating material 14, and a resin supply section 120 to uniformly coat the coating material 14. Referring to Figure 1 and Figure 2 and described, the tank 121 is a device to supply the liquid coating material 14 to the resin supply section 120, and is not limited as long as it can contain the liquid coating material. The tank 121 can receive the liquid coating material from a plurality of hoppers containing different coating materials according to the kind and manufacturing sequence of the thermal insulation sheet 10, and the liquid coating material at this time can be any one of PE (polyethylene), PP (polypropylene), and EVA (ethylene-vinyl acetate copolymer).

[0057] Further, the resin supply section 120 receiving the liquid coating material from the tank 121 is characterized in that it is structured to uniformly coat the coating material 14 on the raw material moving in the process direction. Referring to Figure 1 , Figure 3 and Figure 4In order to uniformly and rapidly apply the coating material 14, the resin supply unit 120 of the present application is characterized by being a device using a T-die method. The resin supply unit 120 using the T-die method is characterized by uniformly and rapidly applying the molten resin to the entire surface of the film using a die having a slit-shaped discharge port. The high-speed coater 100 of the present application is characterized by uniformly and rapidly applying the liquefied coating material 14 to the raw material using the resin supply unit 120 using a high-speed coating method. Since the coating material 14 uses a high-speed jet coating method of a predetermined thickness, there are no thickness variations, surface variations, wrinkles, color variations, etc., and a high-quality thermal insulation sheet 10 can be produced.

[0058] The bonding unit is characterized in that it is a structure in which the raw material to be bonded and the raw material to which the coating material 14 is applied are brought into surface contact and are pressed to produce a bonded product. Therefore, referring to Figure 1 , Figure 3 and Figure 4 , in order to provide the raw material received from the supply unit with additional raw material for bonding, the bonding unit includes a second unwinder 130 that can be formed with a separate path. The second unwinder 130 is formed separately from the supply unit as a roll-up of the raw material for bonding to be bonded to the raw material. The bonding unit carries the raw material for bonding rolled up on the second unwinder 130, and supplies the raw material for bonding in a state in which the bonding surface of the raw material for bonding exposed to the direction in which the raw material for bonding meets the raw material by a moving device. At this time, the moving device can be a conveyor belt, and is characterized in that it is a structure in which the raw material for bonding is moved in a state in which the bonding surface is exposed to the direction in which the raw material for bonding meets the raw material along the conveyor belt.

[0059] Further, the bonding unit is characterized in that when the raw material for bonding received from the second unwinder 130 comes into contact with the raw material on which the coating material 14 is sprayed, they are passed through a press roller 140. Referring to Figure 1 , Figure 3 and Figure 4 , the press roller 140 is a pair of rollers facing each other and opposite to each other, and when the raw material and the raw material for bonding in surface contact pass between the rollers, the press roller 140 presses from both directions, so that the raw material for bonding can be attached to the raw material to which the coating material 14 is applied. The press roller 140 is preferably disposed at the rear end of the second unwinder 130 in the direction of travel of the raw material. In the case of the press roller 140, the distance between the pair of rollers is particularly important, and the degree of pressing of the bonded film can be adjusted by selecting an appropriate distance.

[0060] The winding unit is characterized in that it is a structure in which the raw material and the raw material for bonding bonded to each other by the bonding unit are wound on a winder 150. Referring toFigure 1 The winding section includes a winder 150, which can be configured to wind and wind up the finished laminated product moving in the process direction on the winder 150.

[0061] Therefore, in the case of moving in the process direction and performing the process, the high-speed coater 100 of the present application can be a structure in which the supply section, the coating section, the lamination section, and the winding section are sequentially arranged in the process direction. More specifically, the first unwinder 110, the resin supply section 120, the second unwinder 130, the pressure roller 140, and the winder 150 can be sequentially arranged, wherein the position of the second unwinder 130 is the position of the portion where the laminated raw material wound by the second unwinder 130 meets the raw material wound by the first unwinder 110.

[0062] The present application can manufacture the thermal insulation sheet 10 using the high-speed coater 100 including the above structure. Referring to Figure 1 , Figure 5 and Figure 6 and will be described, the manufacturing method of the thermal insulation sheet of the present application is characterized by comprising: a first conveying step of exposing one surface of the first film 11 by the first unwinder 110 and conveying in the process direction; a first coating material coating step of coating the coating material 14 between the first film 11 supplied by the first unwinder 110 and the second film 12 supplied by the second unwinder 130; a first lamination step of bringing one surface of the first film 11 into contact with the second film 12 supplied by the second unwinder 130 and forming the first laminated product 10a by the pressure roller 140; a first winding step of winding the first laminated product 10a on the winder 150; a second conveying step of mounting the first laminated product 10a wound by the winder 150 on the first unwinder 110 and exposing the other surface of the first laminated product 10a by the first unwinder 110 and conveying in the process direction; a second coating material coating step of coating the coating material 14 between the other surface of the first laminated product 10a supplied by the first unwinder 110 and the third film 13 supplied by the second unwinder 130; a second lamination step of bringing the other surface of the first laminated product 10a into contact with the third film 13 supplied by the second unwinder 130 and forming the second laminated product 10b by the pressure roller 140; and a second winding step of winding the second laminated product 10b on the winder 150.

[0063] At this time, in the production method of the thermal insulation sheet, first, the supply section performs the first conveying step, the coating section performs the first coating material coating step, the bonding section performs the first bonding step, and the winding section performs the first winding step by the high-speed coater 100 to produce the first bonded product 10a. After that, the first bonded product 10a produced is set again to the supply section to perform the second conveying step, the coating section performs the second coating material coating step, the bonding section performs the second bonding step, and the winding section performs the second winding step, so that the thermal insulation sheet 10 can be produced. The production method of the thermal insulation sheet is characterized in that the operation of the high-speed coater 100 can be repeated a plurality of times according to the number of laminations of the thermal insulation sheet 10 to be produced, so that a plurality of thermal insulation sheets 10 can be bonded in sequence.

[0064] Referring to Figure 7 Before the first conveying step, the production method of the thermal insulation sheet of the present application can further perform a preheating step of preheating the first film 11 wound by the first unwinder 110. The preheating step is a step of preheating the first film 11 mounted on the supply section to a prescribed temperature by heating the preheating section 160 of the high-speed coater 100. Whether or not the preheating step is performed can be determined according to the type of the film mounted on the supply section, and the degree of the preheating temperature can be adjusted according to the type of the raw material mounted on the supply section. If the preheating step is performed, the first conveying step is preferably performed thereafter so that the preheated raw material moves after the preheating step.

[0065] Further, referring to Figure 7 and Figure 8 In the present application, after the preheating step, a scratching step of forming fine grooves or fine cracks on the surface of the first film 11 can be further included. The scratching step is characterized in that fine grooves or fine cracks are formed on the contact surface among both surfaces of the first film 11 which will be in contact with other second films 12 in the subsequent step. Among them, fine grooves and fine cracks can be formed by rolling a roller 111 having a plurality of protrusions formed in a specific pattern on an arbitrary surface of the first film 11. By the scratching step, the following effect can be obtained: the adhesion when the first film 11 is bonded to the second film 12 is improved.

[0066] Further, the first conveying step of supplying the raw material in a certain direction in the process direction can be performed. Referring to Figure 1 and Figure 5 The first conveying step is a step of conveying the first film 11 wound by the first unwinder 110 in the process direction by mounting the first film 11 on the supply section. At this time, it is preferable that the supply section conveys the first film 11 in a state in which one surface of the first film 11 to be attached to other films is exposed.

[0067] As an embodiment of the present application, the first film 11 can be a nonwoven fabric film capable of providing a heat insulating effect in the heat insulating sheet 10. More specifically, the heat insulating sheet 10 of the present application is configured to include a nonwoven fabric film, and can provide a heat insulating function. The first film 11 can be a nonwoven fabric pulp form film capable of providing a heat insulating effect of the heat insulating sheet, and can be formed using any one or more of materials such as EVA (ethylene-vinyl acetate copolymer), PE foam (polyethylene foam), and PP foam (polypropylene foam), or a material configured in a nonwoven fabric form using an organic fiber series such as polypropylene fiber and polyethylene fiber. At this time, the organic fiber series can be configured in a nonwoven fabric form as long fiber or short fiber. In addition, according to the type of sheet to be manufactured, the first film 11 can use an inorganic fiber series nonwoven fabric such as glass long fiber, glass wool, or fiber mineral wool, etc. The first film 11 can be the thickest film among the films laminated to manufacture the heat insulating sheet 10, and can have a thickness in the range of 0.1 mm to 5 mm in order to manufacture the heat insulating sheet 10 in a thin type.

[0068] The first film 11 is transported from the first unwinder 110, and the second film 12 for adhesion to the first film 11 is transported from the outside to the first film 11 side by the second unwinder 130. In other words, the first film 11 is transported by the first unwinder 110, and the second film 12 is transported from the outside to the first film 11 by the second unwinder 130, so that the first film 11 and the second film 12 are in surface contact with each other at a certain position by the first transport step.

[0069] Also, referring to Figure 3 and Figure 5 , a first coating material coating step of coating the coating material 14 at the position where the first film 11 and the second film 12 are in surface contact is performed by the coating part. The first coating material coating step is characterized in that the resin supply part 120 in the T die method sprays the coating material to the portion where the first film 11 and the second film 12 are in surface contact with each other. At this time, the coating material 14 is characterized in that it is uniformly coated in a thin thickness between one surface of the first film 11 and the other surface of the second film 12. Referring to Figure 1 and Figure 6In the first coating material coating step, the coating section is characterized by including the liquefied coating material 14, and the coating material 14 is uniformly coated on the exposed surface of the first film 11 and the exposed surface of the second film 12 using a high-speed coating method, and the first film 11 is moved in a certain direction along the operation direction by the supply section. At this time, the coating material 14 can be at least one of PE, PP, EVA, and PVC in a liquid state.

[0070] In the present application, when the thermal insulation sheet 10 is manufactured, the liquefied coating material 14 is uniformly coated between the films different from each other by the resin supply section 120, and is fused with the other films, so that a thin thermal insulation sheet 10 can be manufactured, and a sheet material having a smooth surface and no thickness deviation can be manufactured, and thus, compared with the conventional flame and heat lamination method, a thermal insulation sheet 10 having a lower defective rate of the finished product and improved function and quality can be manufactured. Also, the present application uses a high-speed coating method, so that the films of different materials can be attached to each other, and thus, various sheet materials can be manufactured, and since the manufacturing speed can be improved, the present application has a great effect of improving the economy.

[0071] The coating material is coated between the first film 11 supplied by the first unwinder 110 and the second film 12 supplied by the second unwinder 130, and when the two films are in surface contact with each other, the first lamination step is performed, and the first film 11 and the second film 12 are formed into the first finished product 10a by the pressure roller 140. Referring to Figure 3 , the first lamination step is a step in which the second film 12 wound in the second unwinder 130 configured to be independent of the supply section is supplied to the supply section, and the first film 11 is in surface contact with the second film 12. At this time, one surface of the first film 11 and the other surface of the second film 12 can be in surface contact with each other. Among them, the second film 12, which is a film configured to be the outermost film of the thermal insulation sheet 10, can be a film forming a design pattern of the thermal insulation sheet 10. That is, the second film 12 can be a portion of which one surface on which a design pattern is printed and which is finished is exposed to the outermost end, and the other surface of the second film 12 can be a portion which is in surface contact with one surface of the first film 11 and is laminated. According to an embodiment of the present application, the second film 12 can be a film on which a printing layer is coated on any one or more of a PET (polyethylene terephthalate), LLDPE (linear low-density polyethylene), CPP (cast polypropylene), PVC (polyvinyl chloride), PU (polyurethane), PU artificial leather, and PE (polyethylene), or can be an OPP (o-phenyl phenol) film on which a design pattern of a thermal insulation sheet is formed.

[0072] In the first bonding step, the bonding portion meets the supply portion at a certain portion after moving the other surface of the second film 12 in a state of being exposed. And, as shown in Figure 6 and Figure 8 In the first bonding step, the first film 11 and the second film 12 are brought into surface contact with each other and are passed through the pressure roller 140, which presses and fuses the films in surface contact with each other, thereby forming the first bonded product 10a. Thus, one side of the first bonded product 10a can be in a state in which the printed portion of the second film 12 is exposed to the outside, and the other side is provided with the first film 11.

[0073] After the first bonding step, a first winding step of winding the manufactured first bonded product 10a on the winder 150 is performed. Referring to Figure 1 and Figure 5 , the first winding step of supplying the manufactured first bonded product 10a to the winding portion can be a step of arranging the first bonded product 10a by winding the first bonded product 10a on the winder 150. Here, the winding portion can be disposed at the endmost position in the operation direction of the high-speed coater 100, and can perform a step of finishing one operation of the high-speed coater 100.

[0074] Referring to Figure 8 , the present application can further include a scratching step of forming fine grooves or fine cracks on the surface of the third film 13 after the first winding step. The scratching step is characterized by forming fine grooves or fine cracks on the contact surface among the two surfaces of the third film 13 which will be in contact with the first bonded product 10a in a subsequent step. At this time, according to the need, fine grooves or fine cracks are formed on the surface of the first bonded product 10a in the scratching step. Here, fine grooves and fine cracks can be formed by rolling the roller 111 having a plurality of protrusions formed in a certain pattern on any one surface of the first film 11. Through the scratching step, the following effect can be obtained: the adhesion when the first bonded product 10a is bonded to the third film 13 is improved.

[0075] Further, a second conveying step of re-installing the first bonded product 10a wound on the winder 150 on the supply portion is performed. Referring to Figure 1 and Figure 5, the second conveying step is characterized in that, after the first take-up step is performed to integrally perform the process of the high-speed coater 100 once and produce the first laminate 10a, the high-speed coater 100 is used again to laminate other film on the first laminate 10a. Accordingly, in the second conveying step, the first laminate 10a is mounted on a supply section, and the supply section can convey the first laminate 10a in a state in which the other surface of the first laminate 10a is exposed to the outside in a certain direction in the process direction by the first unwinder 110. At this time, the exposed portion can be the other surface of the first film 11.

[0076] The second conveying step is characterized in that, while the first laminate 10a is conveyed from the first unwinder 110, a third film 13 for laminating the first laminate 10a is conveyed from the outside to the first film 11 side by the second unwinder 130. In other words, the first unwinder 110 conveys the first laminate 10a, and the second unwinder 130 conveys the third film 13 from the outside to the first laminate 10a, so that the first laminate 10a and the third film 13 are in surface contact with each other at a certain position by the second conveying step.

[0077] Further, referring to Figure 4 and Figure 5 , a second coating material coating step of coating a coating material 14 at a position where the first laminate 10a and the third film 13 are in surface contact with each other by the coating section is performed. The second coating material coating step is characterized in that it is a step of spraying a coating material to a portion where the first laminate 10a and the third film 13 are in surface contact with each other by the resin supply section 120 in the T-die method. At this time, the coating material 14 is characterized in that it is uniformly coated in a thin thickness between one surface of the first laminate 10a and the other surface of the third film 13. Referring to Figure 1 and Figure 6 , in the second coating material coating step, the coating material 14 is uniformly coated on the exposed surface of the first laminate 10a that is moved in a certain direction in the process direction by the supply section by the high-speed coating method. At this time, the coating material 14 can be the same material as that used in the first coating material coating step or a different material.

[0078] The second laminating step of coating a coating material between the first laminate 10a supplied by the first unwinder 110 and the third film 13 supplied by the second unwinder 130 when they are in surface contact with each other is performed, and the first laminate 10a and the third film 13 are formed into a second laminate 10b by the pressure roller 140. Referring to Figure 4, the second adhering step is a step in which the third film 13, which is wound by the second unwinder 130 configured independently of the supply unit, is supplied in the same direction as the second film 12, i.e., toward the supply unit, and the first adhering product 10a is brought into surface contact with the third film 13. At this time, the other surface of the first adhering product 10a and one surface of the third film 13 can be brought into surface contact with each other. Here, the third film 13 is an aluminum film configured at the innermost side of the heat insulation sheet 10, and more specifically, the third film 13 can be a PET foil film (polyethylene terephthalate foil film) or an aluminum foil film, an OPP (o-phenylphenol) foil film, a CPP (cast polypropylene) foil film, an LLD foil film, or a high-density polyethylene foil film (HDPE GREY), and can provide a waterproof effect.

[0079] In the second adhering step, the adhering unit can be configured such that the films are brought into contact with each other at a certain portion after the third film 13 is moved while one surface thereof is exposed. Also, in the second adhering step, the first adhering product 10a and the third film 13 are brought into surface contact with each other, and then the films are pressed by the press roller 140, which causes the films in surface contact with each other to be pressed and fused to each other, thereby forming the second adhering product 10b. Thus, as shown in Figure 9 , with respect to the second adhering product 10b, the second film 12, the first film 11, and the third film 13 are sequentially laminated from one side, the printed portion of the second film 12 is exposed at the outermost side, and the third film 13 can be configured at the innermost side.

[0080] Also, after the second adhering step, a second winding step of winding the manufactured second adhering product 10b on the winder 150 is performed. Referring to Figure 1 and Figure 5 , the second winding step of supplying the manufactured second adhering product 10b to the winding unit can be a step of arranging the second adhering product 10b by winding the second adhering product 10b on the winder 150. Here, the winding unit can be configured at the terminal position in the operation direction of the high-speed coater 100, and a step of completing the entire operation of the high-speed coater 100 can be performed.

[0081] The second adhered product 10b can be used as the thermal insulation sheet 10. Among them, the thermal insulation sheet 10 of the present application is made by combining various synthetic resin films (for example, nonwoven fabric, inorganic material, organic material, etc.) with an aluminum foil or a PET foil, an OPP (ortho-phenyl phenol) foil film, a CPP (cast polypropylene) foil film, an LLD foil film, a high-density polyethylene foil film (HDPE GREY), and has excellent tear strength, tensile strength, and compression hardness, and can effectively protect the waterproof layer from the intrusion and impact of external damaging substances. At the same time, it can also be attached to the surface of the waterproof layer for use, and through the coating effect, it realizes the double waterproof function, waterproof layer protection function, and has excellent thermal insulation effect. In addition, according to the use, it can be made by laminating different materials, and according to the adhered material, it can not only be used for thermal insulation wallpaper, but also be used for thermal insulation pads, waterproof layer protection materials of buildings or underground structures, indoor and outdoor decoration materials, root-proof materials, etc.

[0082] Also, the method of manufacturing the thermal insulation sheet of the present application can further include a release paper attaching step of attaching a release paper 15 to the other surface of the second adhered product 10b by an adhesive. The thermal insulation sheet 10 of the present application can be used in the state of the second adhered product 10b, but for the convenience of construction, it can also be used in the state of attaching the release paper 15. Referring to Figure 7 and Figure 9 , the release paper attaching step is performed after the second winding step, and can be performed after the second adhered product 10b wound by the winder 150 is reinstalled on the first unwinder 110 of the high-speed coater 100, or can be performed after the second adhered product 10b wound by the winder 150 is moved to a separate device.

[0083] At this time, as Figure 10As shown, in the release paper attaching step, the second laminate 10b wound by the winder and the release paper 15 are attached by a third unwinder 170 to which the release paper 15 is wound. The third unwinder 170 can be configured to face the other surface of the second laminate 10b to the release paper 15, and the second laminate 10b and the release paper 15 can be attached by pressing the second laminate 10b and the release paper 15 in surface contact by a press roller. Also, the attached type heat insulating sheet to which the release paper is attached by the above process can be stored by being wound on a winder. As for the release paper attaching step, any method can be used as long as it is a method capable of attaching a release paper, in addition to the above method, and the release paper 15 can be attached by using the coating material 14 used in the laminating step, or by using a separate adhesive, or the release paper 15 can include both surfaces of the attachment surface, and the attachment can be achieved by attaching the attachment surface to the second laminate 10b. Thus, the heat insulating sheet 10 in which the release paper attaching step is completed is an attached type heat insulating sheet 10 in which the second film 12, the first film 11, the third film 13, and the release paper 15 are sequentially laminated from one side, and the printed portion of the second film 12 is exposed on the outermost side, and the release paper 15 is disposed on the innermost side.

[0084] The attached type heat insulating sheet 10 to which the release paper 15 is attached can provide an attachment surface on which the work of attaching the heat insulating sheet 10 to a proper position using the release paper 15 is easy, and thus, has an advantage in that the heat insulating sheet 10 can be self-attached by the release paper 15. Thus, it has an advantage in that, when the heat insulating sheet 10 is attached, an excellent finishing effect can be provided while providing an economic effect.

[0085] Figure 11 is a conceptual diagram of a method of manufacturing a heat insulating sheet according to another embodiment, with reference to Figure 5 A rapid drying machine 190 for rapidly drying the coating material inside before being wound by the winder 150 after passing through the press roller 140 is further provided, and a rapid drying step for rapidly drying the coating material between the laminates which is not dried can be further included. Since the coating material between the PE- and EVA-sprayed raw material and the laminating raw material which are laminated by the pair of press rollers 140 is in a non-dried state, the coating material can be rapidly dried in this manner before reaching the winding roller to strengthen the attachment of the laminates and make the winding easier.

[0086] As described above, in the present application, specific matters (e.g., specific structures, elements, etc.) and limited embodiment drawings are described, but this is provided only to help more fully understand the present application, and the present application is not limited to the above-described embodiments, and various modifications and changes can be made by those of ordinary skill in the art based on such descriptions.

[0087] The idea of the present application should therefore not be limited to the described embodiments, not only within the scope of the claims, but also all modifications which are equivalent or identical to these claims are within the scope of the idea of the present application.

Claims

1. A method of making a thermal insulation sheet, characterized by, comprises: a first conveying step of exposing a first film to one surface by a first unwinder and conveying the first film in a process direction, a first coating material applying step of applying a liquefied resin coating material in a high-speed coating manner between the one surface of the first film and a second film supplied by a second unwinder, a first laminating step of contacting the one surface of the first film with the second film supplied by the second unwinder and laminating the first film by a press roller to form a first laminate, a first winding step of winding the first laminate on a winder, a second conveying step of mounting the first laminate wound on the winder on the first unwinder, exposing the other surface of the first laminate by the first unwinder, and conveying the first laminate in the process direction, a second coating material applying step of applying a liquefied resin coating material in a high-speed coating manner between the other surface of the first laminate and a third film supplied by a second unwinder, a second laminating step of contacting the other surface of the first laminate with the third film supplied by the second unwinder and laminating the first laminate by the press roller to form a second laminate, and a second winding step of winding the second laminate on a winder.

2. The method of claim 1, wherein: a preheating step of preheating the first film wound on the first unwinder to a predetermined temperature at which a raw material does not melt is further performed before the first conveying step is performed.

3. The method of claim 2, wherein: a scratching step of forming fine grooves or fine cracks on the surface of the first film is further performed after the preheating step is performed.

4. The method of claim 1, wherein: the coating material is at least one material of a liquid polyethylene, a polypropylene, an ethylene-vinyl acetate copolymer, and a polyvinyl chloride.

5. The method of claim 1, wherein: the first film is formed in a nonwoven fabric form, and the nonwoven fabric form is formed of at least one material of an ethylene-vinyl acetate copolymer, a polyethylene foam, a polypropylene foam, and an organic fiber series.

6. The method of claim 5, wherein: the first film has a thickness of 0.1 mm to 5 mm.

7. The method of claim 1, wherein: the second film is a film on which a printing layer is applied on any one or more of a polyethylene terephthalate, a linear low-density polyethylene, a cast polypropylene, a polyvinyl chloride, a polyurethane, a polyurethane artificial leather, and a polyethylene, or the second film is a phylate film.

8. The method of claim 7, wherein: the third film is an aluminum film or a polyethylene terephthalate foil film, a phylate foil film, a cast polypropylene foil film, an LLD foil film, a high-density polyethylene foil film.

9. The method of claim 8, wherein: ​ ​ The second laminated article is a heat insulation sheet in which the second film, the first film, and the third film are sequentially laminated from one side.

10. The method of claim 1, wherein the method further comprises: after the second winding step, a step of: attaching a release paper to the other surface of the second laminated article by an adhesive.

11. The method of claim 10, wherein the method further comprises: the method of claim 10, wherein the method further comprises:

12. The method of claim 1, wherein the method further comprises: before at least either one of the first winding step and the second winding step, a step of: quickly drying the non-dried coating material between the laminated articles.

13. A heat insulation sheet, wherein the heat insulation sheet is sequentially laminated with the second film, the first film, and the third film from one side, and is manufactured by the method of claim 1.

14. The heat insulation sheet of claim 13, wherein the heat insulation sheet is an attached heat insulation sheet in which a release paper is additionally laminated to the other side of the third film, and the attached heat insulation sheet is attached to a construction site through the other surface of the release paper and is used for construction. ​ ​ ​ ​ ​

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