KR100820597B1 - The roof sheet having pollution-free and weather-resistance and the method of thereof - Google Patents

Abstract

The present invention is durable in the intermediate layer (103) consisting of a sheet made of any one of water-repellent reinforced polyester fiber, water-repellent filament yarn woven fabric, water-repellent filament yarn, water-repellent glass fiber for building waterproofing and outdoor roofing substrate. The upper and lower layers 101,102, composed of reinforced fluorocarbon resins, polyethylene, polypropylene, ethylene-propylene rubber, and flame retardants as the main components, are combined and used for thermoplastic waterproofing and roofing sheets or fabrics that can be used in a wide range of similar applications. In order to improve stain resistance and weather resistance, an adhesive layer 105 formed of a sheet of a mixture of polyurethane and acrylic resin is formed on the upper surface of the upper layer 101, and a mixture of fluororesin and acrylic resin is formed on the upper surface of the adhesive layer 105. It is possible to coat the surface treatment agent layer 106 consisting of a sheet consisting of The outdoor roof sheet for improved weather resistance is not processed by extrusion but is processed by a calender process, so that the uniform dimensional stability and adhesion of each layer are very excellent and the surface treatment agent layer is formed on the outer surface of the adhesive layer. This is a synthetic polymer roof sheet which is laminated and has improved pollution resistance, antibacterial property, and weather resistance, and a method for manufacturing the same, which is easy to process and mold calender process, inhibits the growth of enzymes and microorganisms, and has excellent weather resistance. Does not degrade performance due to oxidation, surface contamination, discoloration, etc.

Fluorine-based elastomer, polyolefin elastomer, copolymer resin mixture, fouling resistance, antibacterial, antifouling, weather resistance, calender process, hot plywood process, filament yarn, knife gravure (Knife-Gravure)

Description

Synthetic polymer roof sheet having improved pollution resistance and weather resistance and its manufacturing method {The roof sheet having pollution-free and weather-resistance and the method of

The present invention relates to a synthetic polymer roof sheet having improved stain resistance and weather resistance, and a method of manufacturing the same. More particularly, the present invention relates to a water-repellent polyester fiber and a water-repellent filament yarn, which are waterproof and outdoor roofing materials for construction. The upper layer consisting of a polypropylene composite fabric or a sheet made of any one of water-repellent glass fibers, the upper layer consisting of a fluorocarbon resin, polyethylene, polypropylene, ethylene-propylene rubber, and a flame retardant as a main component. The lower layers 101 and 102 combine and consist of a sheet made of a mixture of polyurethane and acrylic resin on the upper surface of the upper layer 101 for improving the stain resistance and weather resistance of the thermoplastic waterproofing and roofing sheet or fabric which can be used in a wide range of similar fields. The adhesive layer 105 is formed, and the fluorine resin is formed on the upper surface of the adhesive layer 105. The present invention relates to a synthetic polymer roof sheet and a method of manufacturing the same, wherein the surface treatment agent layer 106 composed of a sheet composed of a mixture of an acrylic resin and a coating material can be coated.

In general steel roofing materials, leakage occurs in bolts connecting steel plates and steel plates according to external environment changes such as temperature change, climate change, etc., and the durability of roofing materials is more than 10 ~ 15 years. In addition, it should be excellent in various performances such as weather resistance, antibacterial property, water resistance, heat resistance and flame resistance.

In order to compensate for the drawbacks of the steel sheet roofing material, a multilayer composite thermoplastic elastomer-based roofing material capable of hot air welding has recently been used. Products specifically applicable to multi-layered thermoplastic elastomers used include thermoplastic elastomeric waterproof sheets, core reinforcements, such as Stevens' Hi-Tuff EP, Genfilex's Genflex, GAF's Everguard, Firestone's Ultra Ply, and CARLISLE's SURE-WELD. There are products made of thermoplastic elastomers. The component of the product is composed of ethylene-propylene-rubber component, such a soft thermoplastic elastomer has the advantages of excellent mechanical properties and injection, extrusion, T-Die, blow molding using a general molding machine. Since the above products are made of soft thermoplastic elastomers, unlike steel sheet roofing materials, they are connected by hot air welding so that problems such as leakage do not occur.

However, the multilayer composite roof sheet made of the thermoplastic elastomer-based waterproof sheet / center reinforcement / thermoplastic elastomer-based waterproof sheet does not have a separate treatment to prevent contamination, weather resistance, and antibacterial property on the surface, so that it is not resistant to contamination, weather resistance, and antibacterial activity. In the flame retardant part, there is a problem.

In addition, the reinforced composite fabric with enhanced physical properties uses water-absorbing materials, so when the finished product is applied, a separate sealing material is used at the end of the sheet material. This peeling problem and the use of reinforcement composite fabric that does not separate treatment has a weak problem in the flame retardant part when applying the finished product.

Therefore, the present invention has been made to solve such a conventional problem, it is excellent in uniform dimensional stability and bonding of each layer by using a calendar (Calender) process, the water-reinforced polyester fiber or By using water-repellent polypropylene composite fabric or water-repellent glass fiber, water is absorbed and the upper and lower layers composed of sheets containing fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber, and flame retardant as main components are separated. It does not occur, and has excellent flame retardant performance, which has an effect of delaying combustion when using the finished product, and an adhesive layer 105 composed of a sheet composed of a mixture of polyurethane and acrylic resin and a surface treating agent layer composed of a sheet composed of a mixture of fluorocarbon resin and acrylic resin (106). ) Is further added to the top layer 101 for fouling and weather resistance. And an object thereof is to provide improved synthetic polymer-based roofing sheet, and a method of manufacturing the same.

In order to achieve the above object, the multi-layer composite synthetic polymer roof sheet having improved fouling resistance and weather resistance of the present invention is a sheet containing a fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as a main component of the upper layer ( 101) and a lower layer 102, the sheet consisting of any one of the water-reinforced polyester fiber, water-repellent filament yarn woven polypropylene composite fabric, water-repellent glass fiber, the upper layer 101 and the lower layer Disposed between the intermediate layers 103, a sheet made of a mixture of polyurethane and an acrylic resin on an upper surface of the upper layer 101 is disposed as an adhesive layer 105, and a fluorine layer on an upper surface of the adhesive layer 105. It is characterized in that the sheet made of a mixture of a resin and an acrylic resin is arranged in the surface treatment agent layer 106.

In addition, the manufacturing method of the multi-layer composite synthetic polymer roof sheet with improved stain resistance and weather resistance of the present invention is an upper layer 101 composed of a sheet containing fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as a main component. And the lower layer 102 is manufactured by a calender process using a thermocompression roller to reduce the shrinkage and deformation of the sheet, a water-reinforced polyester fiber, a polypropylene composite fabric woven with water-repellent filament yarn, The upper layer and the lower layer are bonded to the intermediate layer 103 made of a sheet made of any one of water repellent glass fibers by a thermoplywood process to have excellent bonding strength, and a mixture of polyurethane and acrylic resin for polarity and strong adhesion. Made of a mixture of a fluororesin and an acrylic resin Method of manufacturing a synthetic polymer roof sheet with improved fouling resistance and weather resistance, characterized in that the surface treatment agent layer consisting of a sheet 106 is coated by the knife-gravure (Knife-Gravure) method on the upper layer 101 It is characterized by providing.

Hereinafter, the present invention will be described in detail.

Fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and the flame retardant sheet used in the present invention as a main component has a flexibility and durability without the addition of a plasticizer, a physical property modifier and easily welded the sheet and the joint of the sheet There is an advantage to this. The upper layer 101 and the lower layer 102 composed of a sheet containing the fluororesin, polyethylene, polypropylene, ethylene-propylene rubber, and a flame retardant as main components are 10-20 wt% of fluorocarbon resin, 10-30 wt% of polyethylene, and polypropylene. 10 to 30% by weight, ethylene-propylene rubber 40 to 60% by weight, flame retardant 10 to 30% by weight as a main component, the resin 100 containing the fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as a main component It is composed of 10 to 50 parts by weight of filler, 0.1 to 3.0 parts by weight of antioxidant, 0.2 to 2 parts by weight of UV blocker, 0.2 to 2 parts by weight of heat stabilizer, antimicrobial agent, pigment and other additives.

If the fluorine resin content is less than 10% by weight, there is a problem that the antimicrobial, fouling resistance, and weather resistance may fall, and when more than 20% by weight, the adhesive layer 105 consisting of the upper layer 101 and a sheet composed of a mixture of polyurethane and acrylic resin Since there is a problem that the adhesion with the fluoro resin content is preferably 10 to 20% by weight, the polyethylene content of less than 10% by weight may reduce the workability of the sheet forming the upper and lower layers in the calender, when exceeding 30% by weight There is a problem that the physical strength of the sheet forming the upper layer and the lower layer is falling, the polyethylene content is preferably 10 to 30% by weight, and if the polypropylene content is less than 10% by weight, the weather resistance and physical strength of the sheet forming the upper layer and the lower layer is lowered If more than 30% by weight, the hardness of the sheet forming the upper layer and the lower layer is increased and the hot air of the sheet and the sheet It is difficult to weld, so the polypropylene content is preferably 10 to 30% by weight. If the content of ethylene-propylene rubber (EPR) is less than 40% by weight, the hardness of the upper layer and the lower layer may increase, which may make hot air welding difficult. If there is a problem, and if it exceeds 60% by weight, there is a problem that the workability of the sheet forming the upper layer and the lower layer in the calendar may be inferior, so that the content of ethylene-propylene rubber is preferably 40 to 60% by weight, and the flame retardant content is less than 10% by weight. There is a problem that the flame retardancy may fall, and when the content exceeds 30% by weight, the physical properties of the product may fall, so the flame retardant content is preferably 10 to 30% by weight.

In addition, the intermediate layer 103, which is a sheet made of any one of water-reinforced reinforced polyester fibers, water-repellent filament yarn woven polypropylene composite fabric, and water-repellent glass fibers, is dimensioned by long-term thermal deformation. Improvement of physical properties such as stability, tensile and tearing and absorption of water prevents the problem that the upper and lower layers composed of a sheet containing fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as the main components do not occur. Do not lose antimicrobial and durability by and keep flame retardant when using finished product to obtain combustion delay effect.

The thickness and thickness of any one of the water-reinforced polyester fiber, the water-repellent filament yarn woven polypropylene composite fabric, the water-repellent glass fiber of the sheet forming the intermediate layer 103, the thickness of 0.01 ~ 0.50mm, thickness Characterized by 150 ~ 3,000 denier (Denier).

In addition, the adhesive layer 105 composed of a sheet made of a mixture of polyurethane and acrylic resin used in the present invention is composed of a sheet containing fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant without surface polarity as a main component. It is used to improve fouling resistance and weather resistance by giving polarity to the upper layer 101 and increasing adhesion to the surface treatment agent layer 106 composed of a sheet made of a mixture of fluororesin and acrylic resin. The sheet consisting of a mixture of polyurethane and acrylic resin constituting the adhesive layer 105 is composed of 10 to 20% by weight of polyurethane, 5 to 10% by weight of acrylic resin as a main component and a volatile solvent and the like as other auxiliary components.

If the polyurethane content is less than 10% by weight, the adhesive strength between the adhesive layer 105 made of a mixture of polyurethane and acrylic resin and the surface treatment agent layer 106 made of a sheet made of a mixture of fluororesin and acrylic resin becomes weak. If it exceeds 20% by weight, there is a problem that may affect the weather resistance of the surface treatment agent layer 106 composed of a sheet of a mixture of fluororesin and acrylic resin, the polyurethane content is preferably 10 to 20% by weight. Do.

Similarly, when the content of the acrylic resin is less than 5% by weight, the adhesive layer 105 made of a sheet made of a mixture of polyurethane and acrylic resin and the surface treatment agent layer 106 made of a sheet made of a mixture of fluororesin and acrylic resin The adhesive force may be weakened, and when it exceeds 10% by weight, it may not be mixed with the polyurethane, so the content of the acrylic resin is preferably 5 to 10% by weight.

In addition, the surface treatment agent layer 106 composed of a sheet of a mixture of a fluororesin and an acrylic resin used in the present invention is characterized in that it does not easily get dust even when exposed to the outdoors for a long time and provides stain resistance and weather resistance without discoloration. do. The sheet consisting of a mixture of the fluororesin and acrylic resin constituting the surface treatment agent layer is composed of 10 to 50% by weight of fluororesin, 5 to 30% by weight of acrylic resin as a main component, and a volatile solvent and the like are added as other auxiliary components.

If the content of the fluororesin is less than 10% by weight, there is a problem of poor fouling resistance and weather resistance, and if the content of the fluororesin is greater than 50% by weight, the surface treatment agent layer composed of a sheet composed of a mixture of fluororesin and acrylic resin and a mixture of polyurethane and acrylic resin Since there is a problem that the adhesive strength with the adhesive layer consisting of the sheet is inferior, the content of the fluororesin is preferably 10 to 50% by weight.

Similarly, when the content of the acrylic resin is less than 5% by weight, there is a problem that the fouling resistance and weather resistance may fall, and when the content of the acrylic resin exceeds 30% by weight, the surface treatment agent layer consisting of a mixture of a fluororesin and an acrylic resin and a polyurethane and an acrylic resin Since there is a problem that the adhesive strength with the adhesive layer consisting of a sheet consisting of a mixture of the fall of the acrylic resin is preferably 5 to 30% by weight.

On the other hand, the manufacturing method of the synthetic polymer roof sheet with improved stain resistance and weather resistance of the present invention will be described.

The upper layer 101 and the lower layer 102 composed of a sheet containing fluororesin, polyethylene, polypropylene, ethylene-propylene rubber, and flame retardant as main components are 10-20 wt% of fluorocarbon resin, 10-30 wt% polyethylene, and poly Filler 10 based on 10 to 30% by weight of propylene, 40 to 60% by weight of ethylene-propylene rubber, 10 to 30% by weight of flame retardant and fluorocarbon resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant 50 parts by weight, 0.1 to 3.0 parts by weight of antioxidant, 0.2 to 2 parts by weight of UV blocker, 0.2 to 2 parts by weight of heat stabilizer, etc. were added to the mixer, and the mixed mixture was mixed at 160 ° C. for 5 minutes by a mixing roll. After kneading at 150 ℃ for 2 minutes, it is sent to a warming roll, and then kneaded for 2 minutes at 150 ℃ for 2 minutes, and then sent to a calendar, and then made into 0.55mm thick at 160 ℃, polyethylene, polypropylene, and ethylene-propylene. An upper layer 101 and a lower layer 102 composed of a sheet containing rubber and a flame retardant as main components are prepared.

The upper and lower surfaces of the intermediate layer 103 composed of a sheet made of any one of the top layer and the bottom layer thus produced are water-reinforced polyester fiber, a polypropylene composite fabric woven with water-repellent filament yarn, and water-repellent glass fiber. The lower layer is 165 ° C. on the preheat roll, the upper layer is 140 ° C. on the preheat roll, the middle layer is 100 ° C. on the fabric preheat roll, and plywood at 240 ° C. on the main roll, respectively. Semi-finished roof sheet fabric joined by bonding an intermediate layer (103) consisting of a sheet made of fiber, a polypropylene composite fabric woven from water-repellent filament yarn, or a water-repellent glass fiber, between the upper layer (101) and the lower layer (102). 107 is prepared.

An adhesive layer is formed by coating an adhesive on a sheet made of a mixture of polyurethane and acrylic resin on the roof sheet fabric thus prepared, and then coating a surface treatment agent on a mixture of fluorocarbon resin and acrylic resin to form a surface treatment agent layer. Synthetic polymer-based roof sheet with improved stain resistance and weather resistance is prepared.

As described above, the present invention is excellent in uniform dimensional stability of the sheet and bonding of each layer by using a calender process, polypropylene woven from water-repellent reinforced polyester fiber, water-repellent filament yarn Water is absorbed by using either composite cloth or water-repellent glass fiber, so that the upper and lower layers composed of a sheet containing fluorine resin, polyethylene, polypropylene, ethylene-propylene rubber, and a flame retardant as a main component do not occur. It provides excellent flame retardancy, and is composed of a fluororesin, polyethylene, polypropylene, ethylene-propylene rubber, which is composed of an adhesive layer composed of a mixture of polyurethane and acrylic resin and a surface treating agent layer composed of a mixture of fluororesin and acrylic resin. And the upper and lower layers consisting of a sheet containing a flame retardant as a main component In addition, the present invention provides a synthetic polymer roof sheet that can be used in various roofing or waterproofing methods of directly exposing the air to fresh water or improving water resistance and weather resistance and flame retardant performance.

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

The following examples are only intended to describe specific embodiments of the present invention and are not intended to be limited by the embodiments of the present invention.

    <Example>

Fluorine resin, polyethylene, polypropylene and ethylene in the interlayer 103 consisting of a sheet consisting of a water repellent reinforced polyester fiber, a polypropylene composite fabric woven from water repellent filament yarn, and a water repellent glass fiber. 71% by weight of resin mixed with propylene rubber, 15% by weight of flame retardant, 8% by weight of filler, 3% by weight of antioxidant and heat stabilizer, 3% by weight of other additives, fluororesin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant The upper layer 101 and the lower layer 102 composed of a sheet containing main components are thermally laminated, and 20% by weight of a mixture resin of polyurethane and acrylic resin, 50% by weight of methyl ethyl ketone, and methyl isobutyl ketone on the upper surface of the upper layer. A certain amount of coating loading of the adhesive layer 105 consisting of a sheet composed of a mixture of 30% by weight of polyurethane and acrylic resin is carried out. The coating material uses a knife-gravure (Knife-Gravure) that can adjust 10 ~ 50㎛, 50% by weight of the mixture resin of the fluororesin and acrylic resin, 30% by weight methyl ethyl ketone, methyl isobutyl ketone on the adhesive layer A certain amount of coating agent is loaded on the surface treating agent layer 106 composed of a sheet composed of a mixture of 20 wt% fluororesin and acrylic resin. The coating load uses a knife-gravure (Knife-Gravure) that can adjust 10 ~ 50㎛.

Comparative Example 1

A roof sheet having a total thickness of 1.52 mm using a thermoplastic polyolefin (TPO) manufactured by CARLISLE SURE-WELD manufactured in the United States was purchased.

Comparative Example 2

We bought a roof sheet with a total thickness of 1.14 mm made of thermoplastic polyolefin (TPO), a US STEVENS EP product distributed in Korea.

Comparative Example 3

We purchased a roof sheet with a total thickness of 1.14 mm made of thermoplastic polyolefin (TPO), a US GENFLEX product distributed in Korea.

<Test Example>

① Hot air adhesion

According to Examples and Comparative Examples 1 to 3 according to the original wind (WP) test method standard (WPS-06-03-011) using an AUTOMATIC HOT-AIR WELDING MACHINE manufactured by Swiss LEISTER CH 6060 SARNEN. After warm hot welding machine at 460 ℃ for 30 minutes by WARM-UP, the front and back sides of the two specimens to be measured are superimposed and hot-air bonded using a constant speed (as shown in Table 1). Evaluation was made with the metastasis state. It was evaluated as good at 80-100% transition, normal at 50-80% transition, and poor at 50% transition. The results are shown in Table 1.

Working speed (M / MIN) Example Comparative Example 1 Comparative Example 2 Comparative Example 3 3.0 100 (good) 100 (good) 60 (normal) 60 (normal) 4.0 90 (good) 70 (normal) 10 (bad) 15 (bad) 5.0 80 (good) 55 (normal) 0 (bad) 5 (bad)

As can be seen in Table 1, the embodiment of the present invention is the most excellent and Comparative Example 1 was not in use, the product of Comparative Examples 2, 3 was found to be difficult workability during construction.

② Weather resistance measurement

In order to measure the deterioration of the product with respect to Examples and Comparative Examples 1 to 3 using a test method WPS-06-03-012 of our company in the ATLAS company's UVCON TEST after the stagnation of the corresponding time after taking out of the UVCON TEST machine and dichroic phenomenon Using the color difference meter of Datacolor Spectra Flash SF600, which is a measuring machine capable of measuring the color difference value ΔE, the larger this value, the larger the dichroic phenomena. The results are shown in Table 2.

division Example Comparative Example 1 Comparative Example 2 Comparative Example 3 1000 HRS ΔE = 1.27 ΔE = 1.60 ΔE = 1.58 ΔE = 1.06 2000 HRS ΔE = 1.28 ΔE = 2.72 ΔE = 2.54 ΔE = 1.55 3000 HRS ΔE = 1.29 ΔE = 3.06 ΔE = 3.55 ΔE = 1.71 4000 HRS ΔE = 1.30 ΔE = 3.78 ΔE = 4.21 ΔE = 1.80 5000 HRS ΔE = 1.43 ΔE = 4.03 ΔE = 5.56 ΔE = 2.65

As can be seen in Table 2, the embodiment of the present invention is the best, and the comparative product 3 of the conventional product is good but less than the example, the product of Comparative Examples 1 and 2 is poor as time passes, which is problematic in use. appear. Thus, the present invention was found to be the best.

③ Measurement of pollution resistance (antifouling)

In order to measure the stain resistance of the products for Examples and Comparative Examples 1 to 3, after the exposure of our outdoor equipment for 10 months, samples of the relative products were taken and the color difference value was measured using a color difference meter of MINOLTA CR-300, a dichroism measuring machine. E was measured. The results are shown in Table 3.

division Example Comparative Example 1 Comparative Example 2 Comparative Example 3 10 months later ΔE = 2.90 ΔE = 16.50 ΔE = 14.41 ΔE = 18.52

As can be seen in Table 3, the present invention was found to be excellent in Examples, and Comparative Examples 1,2 and 3, which are conventional products, were poor. Thus, the present invention was found to be the best.

④ Water repellency measurement

In order to measure the water repellency of the product for Examples and Comparative Examples 1 to 3, using the test method WPS-06-03-013 of the product, the specimen was left in a solution diluted with an aqueous ink and water for 24 hours, and then the intermediate layer of the product. By measuring the length of the water-based ink ride on the fabric of, less than 1cm was good, 1 to 3cm usually, 4cm or more was evaluated as bad. The results are shown in Table 4.

division Example Comparative Example 1 Comparative Example 2 Comparative Example 3 24 hours later 0.9 cm (good) 12.0cm (bad) 4.0cm (bad) 14.0cm (bad)

As can be seen in Table 4, the embodiment of the present invention has a water repellency of less than 1 cm, Comparative Examples 1, 2 and 3 of the conventional product was proved that there is no water repellency.

Through the above results it can be seen that the present invention can improve the weather resistance and water repellency at the same time, the most excellent in the physical properties.

1 is a cross-sectional structure diagram of a synthetic polymer roof sheet having improved stain resistance and weather resistance of the present invention.

Figure 2 is a calender (Calender) process and knife-gravure (Knife-Gravure) manufacturing process diagram of the synthetic polymer roof sheet with improved stain resistance and weather resistance of the present invention.

* Names of symbols for main parts of the drawings

101: upper layer consisting of a sheet containing fluorocarbon resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as main components

102: lower layer consisting of a sheet containing fluorocarbon resin, polyethylene, polypropylene, ethylene-propylene rubber and flame retardant as main components

103: an intermediate layer consisting of a sheet made of any one of water-reinforced polyester fiber, polypropylene composite fabric woven from water-repellent filament yarn, and water-repellent glass fiber

104: Hot Melting Roller

105: adhesive layer consisting of a sheet consisting of a mixture of polyurethane and acrylic resin

106: surface treatment agent layer consisting of a sheet consisting of a mixture of fluorocarbon resin and acrylic resin

107: semi-finished roof sheet fabric bonded in the order of the upper layer (101), the middle layer (103) and the lower layer (102)

Claims (6)

A sheet comprising fluororesin, polyethylene, polypropylene, ethylene-propylene rubber, and a flame retardant as a main component is disposed in the upper layer 101 and the lower layer 102, and is woven of water-reinforced polyester fiber, water-repellent filament yarn A sheet made of any one of polypropylene composite fabric and water-repellent glass fibers is disposed as an intermediate layer 103 between the upper layer and the lower layer, and a sheet made of a mixture of polyurethane and acrylic resin is formed on the upper layer of the adhesive layer 105. And a sheet made of a mixture of a fluororesin and an acrylic resin on the upper surface of the adhesive layer, and arranged as a surface treatment agent layer 106, thereby improving stain resistance and weather resistance. The method of claim 1, The sheet forming the upper layer and the lower layer is composed of 10 to 20% by weight of fluorocarbon resin, 10 to 30% by weight of polyethylene, 10 to 30% by weight of polypropylene, 40 to 60% by weight of ethylene-propylene rubber, and 10 to 30% by weight of flame retardant. Synthetic polymer-based roof sheet with improved fouling resistance and weather resistance, comprising. The method of claim 1, The thickness and thickness of any one of the water-reinforced polyester fiber, the water-repellent filament yarn woven polypropylene composite fabric, the water-repellent glass fiber of the sheet forming the intermediate layer, the thickness of 0.01 ~ 0.05mm, thickness 150 ~ 3000 Synthetic polymer roofing sheet with improved stain resistance and weather resistance, characterized in that the denia. The method of claim 1, The sheet made of a mixture of polyurethane and acrylic resin constituting the adhesive layer comprises 10 to 20% by weight of polyurethane, 5 to 10% by weight of acrylic resin as a main component, synthetic polymer roof with improved stain resistance and weather resistance Sheet. The method of claim 1, The sheet made of a mixture of fluororesin and acrylic resin constituting the surface treatment agent layer comprises 10 to 50% by weight of fluororesin and 5 to 30% by weight of acrylic resin as a main component. System roof sheet. The upper layer 101 and the lower layer 102 composed of a sheet containing fluororesin, polyethylene, polypropylene, ethylene-propylene rubber, and a flame retardant as main components are manufactured by a calender process using a thermocompression roller, and the water repellent treatment is performed. The upper layer and the lower layer are bonded by a thermoplywood process to an intermediate layer 103 composed of a sheet made of any one of reinforced polyester fibers, a polypropylene composite fabric woven with water-repellent filament yarn, and a water-repellent glass fiber, and polyurethane And a surface treatment agent layer 106 composed of a sheet composed of a mixture of a resin and an acrylic resin, and a sheet composed of a mixture of a fluororesin and an acrylic resin. The upper layer 101 has a knife-gravure method. Manufacturing method of synthetic polymer roof sheet having improved stain resistance and weather resistance characterized by coating .

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