KR20220168335A - Adhesive coating liquid composition and building sheet manufactured by applying the same - Google Patents

Abstract

The present invention relates to an adhesive coating liquid composition and a building sheet manufactured by applying the same. The adhesive coating liquid composition according to the present invention comprises a base resin, a reactive agent, and an initiator. In the base resin, an ethylene-methyl acrylate copolymer is used. In the reactive agent, polypropylene is used. In the initiator, glycidyl methacrylate is used. Accordingly, the adhesive coating liquid composition according to the present invention can improve adhesion to a printed paper layer with various patterns and prevent peeling or loosening of the printed paper layer by being applied to both surfaces of a substrate.

Description

Adhesive coating liquid composition and construction sheet manufactured by applying the same

The present invention relates to an adhesive coating liquid composition and a construction sheet manufactured by applying the same, and more particularly, by coating both surfaces of a substrate, the adhesive strength with a printing paper layer formed with various patterns can be improved and peeling or lifting of the printing paper layer can be prevented. It relates to a preventable adhesive coating liquid composition and a construction sheet manufactured by applying the same.

In general, indoor doors made of processed wood such as hardwood, plywood, and MDF, which have been widely used from the past, have a short lifespan, and deformation such as twisting occurs due to long-term use. There are problems such as increasing manufacturing cost because it is gradually limited.

In order to solve this problem, recently, a door made of a plastic material has been proposed, and it can be seen that various types of plastic doors are being produced and sold.

Usually, a plastic door is made by extruding a synthetic resin such as PVC or ABS to make a square mold that supports the door, and also uses the above material to form a front plate and a back plate with a plastic plate material made into a plate shape by a mold, and the front plate The door board is produced by foaming and filling synthetic resin as an intermediate filler in the middle of the door and the back plate, that is, inside the door, or by filling honeycomb-shaped paper reinforcement (honey comb), etc. will produce the final

In addition, in the conventional plastic door, instead of attaching the frame reinforcing core and the honeycomb middle layer to the front and back plates made of plastic plates, in the composite form of synthetic wood or wood, the materials of the front and back plates are made of MDF boards. It can be seen that an indoor door board is formed by attaching a processed material such as (MDF: Medium density Fiber board) or plywood and attaching a finishing material such as PVC film or veneer to the surface.

Such a plastic door has durability and dimensional stability compared to a wooden door, and has the advantage of excellent moisture resistance. can see

In addition, in the conventional plastic door or door made of processed plywood such as MDF, a large amount of formaldehyde (HCHO) and volatile organic compounds (VOCs), which are environmental pollutants, are released, degrading the air quality of the living environment. It can be seen that it provides the cause of sick house syndrome.

Domestic Patent Publication No. 10-2003-0062594 (published on July 28, 2003) Domestic Registered Utility No. 20-0420080 (registered on June 21, 2006) Domestic Patent Publication No. 10-2017-0056828 (published on May 24, 2017)

The present invention is to provide an adhesive coating liquid composition capable of improving adhesion with a printing paper layer formed with various patterns by being coated on both sides of a substrate and preventing peeling or lifting of the printing paper layer, and a construction sheet manufactured by applying the composition. .

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The adhesive coating liquid composition according to the present invention includes a base resin, a reactant and an initiator, wherein an ethylene-methyl acrylate copolymer is used as the base resin, and polypropylene is used as the reactant. As an initiator, glycidyl methacrylate is used.

The ethylenemethyl acrylate copolymer may be included in a weight ratio of 97 to 99% by weight, the polypropylene at 0.1 to 1.0% by weight, and the glycidyl methacrylate at 0.5 to 2.0% by weight.

In addition, the construction sheet using the adhesive coating liquid composition according to the present invention has a substrate layer 100, a coating layer 200 formed on both sides of the substrate layer 100, and an upper portion of the coating layer 200 on one side of the substrate layer 100. It includes a formed print film layer 300, the base layer 100 is made of polyolefin-based resin, and the coating layer 200 is formed by applying a coating liquid composition on both sides of the base layer 100 and then drying, The coating liquid composition includes a base resin, a reactant and an initiator.

The polyolefin-based resin is high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), ethylene-octene copolymer, Composed of ultra low density polyethylene, medium density polyethylene, ethylene-propylene copolymer, ethylene-butene copolymer and polypropylene It may be any one or more selected from the group.

An ethylene-methyl acrylate copolymer may be used as the base resin, polypropylene may be used as the reactive agent, and glycidyl methacrylate may be used as the initiator.

The ethylenemethyl acrylate copolymer may be included in a weight ratio of 97 to 99% by weight, the polypropylene at 0.1 to 1.0% by weight, and the glycidyl methacrylate at 0.5 to 2.0% by weight.

Details of other embodiments are included in the detailed description.

The adhesive coating liquid composition according to the present invention is coated on both sides of a substrate, thereby improving adhesion with a printing paper layer having various patterns, and manufacturing a construction sheet capable of preventing peeling or lifting of the printing paper layer.

It will be fully understood that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is a cross-sectional view showing a schematic cross-section of a construction sheet prepared including an adhesive coating liquid composition according to the present invention.

The advantages and features of the present invention, and how to achieve them, will become clear with reference to the detailed description of the embodiments below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. don't

Hereinafter, preferred embodiments of the adhesive coating liquid composition according to the present invention will be described in detail.

The adhesive coating liquid composition according to the present invention includes a base resin, a reactant and an initiator.

As the base resin, an ethylene-methyl acrylate copolymer is used, and the ethylene-methyl acrylate copolymer serves to have affinity with the polyolefin film layer and improve adhesive ability at the same time, It is included in a weight ratio of 97 to 99% by weight of the total content of the adhesive coating liquid composition.

When the content of the ethylenemethyl acrylate copolymer is less than 97% by weight, unreacted glycidyl methacrylate may increase, and when the content exceeds 99% by weight, adhesive strength may decrease.

Here, the ethylene methyl acrylate copolymer has a melt flow index of 5 to 20 g/10 min, and preferably contains 10 to 50 wt % of methyl acrylate based on the total weight of the ethylene methyl acrylate copolymer Do. When the melt flow rate is less than 5 g/10 min or greater than 20 g/10 min, processability may be poor. In addition, when the content of methyl acrylate is less than 10% by weight, adhesive strength may decrease, and when the content of methyl acrylate exceeds 50% by weight, affinity with a polyolefin-based film layer may decrease.

The reactive agent may serve to attach glycidyl methacrylate to the ethylenemethyl acrylate copolymer chain, and for example, polypropylene may be used as the reactive agent.

The polypropylene may play a role of having affinity with the polyolefin film layer, and the polypropylene is included in a weight ratio of 0.1 to 1.0% by weight in the total content of the adhesive coating liquid composition.

When the content of the polypropylene is less than 0.1% by weight, unreacted materials may be generated and adhesive strength may decrease, and when the content exceeds 1.0% by weight, physical properties may be deteriorated due to poor crosslinking.

The initiator plays a role of initiating the reaction, and glycidyl methacrylate may be used as the initiator. included in weight percentages in weight percent.

When the content of the glycidyl methacrylate is less than 0.5% by weight, adhesive strength may be deteriorated, and when the content exceeds 2.0% by weight, physical properties may be deteriorated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, a construction sheet manufactured including the adhesive coating liquid composition according to the present invention will be described in detail with reference to preferred embodiments.

1 is a cross-sectional view showing a schematic cross-section of a construction sheet prepared including an adhesive coating liquid composition according to the present invention.

1, the construction sheet 10 according to the present invention includes a base layer 100, a coating layer 200 formed on both sides of the base layer 100, and an upper portion of the coating layer 200 on one side of the base layer 100. It includes a print film layer 300 formed on.

The base layer 100 may be made of a polyolefin-based resin, for example, the polyolefin-based resin is high density polyethylene (HDPE), linear low density polyethylene (LLDPE), or low density polyethylene. (low density polyethylene, LDPE), ethylene-octene copolymer, ultra low density polyethylene, medium density polyethylene, ethylene-propylene copolymer , ethylene-butene copolymer (ethylene-butene copolymer) and polypropylene (polypropylene) may be any one or more selected from the group consisting of.

The coating layer 200 may be formed by applying a coating liquid composition on both sides of the substrate layer 100 and then drying it. The coating liquid composition includes a base resin, a reactant, and an initiator.

As the base resin, an ethylene-methyl acrylate copolymer is used, and the ethylene-methyl acrylate copolymer serves to have affinity with the polyolefin film layer and improve adhesive ability at the same time, It is included in a weight ratio of 97 to 99% by weight of the total content of the adhesive coating liquid composition.

When the content of the ethylenemethyl acrylate copolymer is less than 97 parts by weight, unreacted glycidyl methacrylate may increase, and when it exceeds 99 parts by weight, adhesive strength may decrease.

Here, the ethylene methyl acrylate copolymer has a melt flow index of 5 to 20 g/10 min, and preferably contains 10 to 50 wt % of methyl acrylate based on the total weight of the ethylene methyl acrylate copolymer Do. When the melt flow rate is less than 5 g/10 min or greater than 20 g/10 min, processability may be poor. In addition, when the content of methyl acrylate is less than 10% by weight, adhesive strength may decrease, and when the content of methyl acrylate exceeds 50% by weight, affinity with a polyolefin-based film layer may decrease.

The reactive agent may serve to attach glycidyl methacrylate to the ethylenemethyl acrylate copolymer chain, and for example, polypropylene may be used as the reactive agent.

The polypropylene may play a role of having affinity with the polyolefin film layer, and the polypropylene is included in a weight ratio of 0.1 to 1.0% by weight in the total content of the adhesive coating liquid composition.

When the content of the polypropylene is less than 0.1% by weight, unreacted materials may be generated and adhesive strength may decrease, and when the content exceeds 1.0% by weight, physical properties may be deteriorated due to poor crosslinking.

The initiator plays a role of initiating the reaction, and glycidyl methacrylate may be used as the initiator. included in weight percentages in weight percent.

When the content of the glycidyl methacrylate is less than 0.5% by weight, adhesive strength may be deteriorated, and when the content exceeds 2.0% by weight, physical properties may be deteriorated.

For example, the coating layer may be prepared by extruding for 10 to 20 minutes at a temperature of 180 to 220 ° C. after applying the coating liquid composition to the base layer.

The print film layer 300 is formed on the top of the coating layer 200 on one side of the substrate layer 100 and various patterns are formed to enhance the beauty of the building sheet 10. The print film layer 300 Various types of known print film layers 300 may be used.

For example, a melamine resin printing film layer is used as the printing film layer 300, and the melamine resin printing film layer can be manufactured by printing various patterns with ink on the surface of an eco-friendly paper fabric. It may have an average basis weight of 200 g/m ² , and various patterns may be printed on the paper fabric using ink having adhesive strength.

For example, in the present invention, the ink may be prepared by including an ink pigment, a melamine resin, and a solvent. The ink contains 30 to 40 parts by weight of an ink pigment, 20 to 30 parts by weight of a melamine resin, and 40 to 60 parts by weight of a solvent. It is included in a weight ratio, and a known ink pigment capable of exhibiting various patterns and colors may be used as the ink pigment.

The melamine resin is a weight ratio of 25 to 35 parts by weight of melamine, 15 to 35 parts by weight of formaldehyde, 15 to 25 parts by weight of water, 1 to 3 parts by weight of diethylene glycol and 0.5 to 2 parts by weight of sodium hydroxide at a temperature of 35 to 40 ° C. After preparing a mixed solution mixed with and adjusting the pH of the mixed solution to 7.8 to 8.3, the mixed solution was polymerized at a temperature of 90 to 95 ° C. for 1 to 3 hours, and the polymerized reactant was 35 to 40 After cooling to ℃ and adjusting the pH to 7.2 to 7.7, 1 to 5 parts by weight (5-Ethyl-2-methyl-1,3,2-dioxaphosphorinan-5 based on 100 parts by weight of the cooled reactant to the cooled reactant It can be prepared by adding -yl)methyl dimethyl phosphonate P-oxide.

The solvent may be used to uniformly mix ink pigments and adjust viscosity. For example, the solvent may include at least one selected from the group consisting of ethanol, methanol, isopropyl alcohol, dimethyl ether, and butyl alcohol. can be used

On the other hand, the construction sheet 10 according to the present invention improves adhesion with the printing film layer 300, simultaneously enhances flame retardancy, and prevents peeling or lifting of the construction sheet to further improve durability. A surface protection layer (not shown) may be further formed on the film layer 300 .

The surface protection layer may be formed by applying a surface protection composition on the print film layer 300 and then drying it. The surface protection composition is biomass polyurethane resin, TPO (Thermo Plastic Polyolefine; thermoplastic polyolefin elastomer) resins, silicone compounds, peroxides, flame retardants, flame retardant aids, fillers and antioxidants.

In addition, the surface protection composition is 80 to 100 parts by weight of biomass polyurethane resin, 10 to 30 parts by weight of TPO resin, 10 to 15 parts by weight of silicone compound, 2 to 6 parts by weight of peroxide, 1 to 3 parts by weight of flame retardant, flame retardant adjuvant It may be included in a weight ratio of 0.1 to 1 part by weight, 1 to 3 parts by weight of a filler, and 0.1 to 1 part by weight of an antioxidant.

The biomass polyurethane resin may be a biomass polyurethane resin prepared by the following method.

In order to prepare the biomass polyurethane resin, first, after preparing and mixing dicarboxylic acid and polyol, a condensation reaction may be performed to synthesize polyester polyol.

As the dicarboxylic acid, one or more selected from adipic acid and succinic acid may be used.

In addition, the polyol is 1,6-hexanediol, 1,3-propanediol, and poly tetramethylene ether glycol (PTMG). Any one or more selected from the group consisting of may be used.

Specifically, the polyester polyol is prepared and mixed in a ratio of 1 mol of the dicarboxylic acid and 1.5 to 2.0 mol of the polyol, and then heated to 250 to 300 ° C. It can be produced by conducting a condensation reaction at a temperature of 10 to 20 hours.

Next, a biomass polyurethane resin may be prepared by adding a radical initiator to the polyester polyol, organic solvent, bio multifunctional polyol compound, and isocyanate and reacting thereto.

As the organic solvent, one or more selected from the group consisting of toluene, methyl ethyl ketone, ethyl acetate, acetone, and dimethylformamide may be used.

In addition, the bio-polyfunctional polyol compound may be prepared through a chemical production method in which bio-multifunctional polyol containing a hydroxyl group is synthesized from animal and plant oils derived from biomass resources that do not contain a hydroxyl group.

For example, as a chemical production method of the bio-polyfunctional polyol compound, epoxidation production of introducing a hydroxyl group through epoxidation and ring opening of a carbon double bond in an unsaturated fatty acid chain of animal or vegetable oil. As in epoxidation, a hydroformylation manufacturing method in which a hydroxyl group is introduced through a hydrogenation reaction after hydroformylation on a carbon double bond, and a carbon double bond is cleaved using ozone (O ₃ ) After that, there is a manufacturing method through ozonolysis by introducing a hydroxyl group through hydrogenation.

The hydroxyl group introduced by the epoxidation manufacturing method has a disadvantage in that the reactivity with isocyanate is lower than that of the primary alcohol as a secondary alcohol, and the hydroxyl group introduced by the hydroformylation manufacturing method has the disadvantage that the hydroxyl group introduced by the epoxidation manufacturing method has a fatty acid chain. Although it is produced in the middle, it produces a primary alcohol, so the reactivity with isocyanate is relatively higher. The hydroxyl group introduced by the manufacturing method through ozone decomposition is located at the end of the chain and has the advantage of high reactivity with isocyanate.

In the present invention, the bio-polyfunctional polyol compound may be used alone or in combination of two or more known bio-polyfunctional polyol compounds prepared as described above.

The bio-polyfunctional polyol compound may have a weight-average molecular weight (Mw) of 3,000 to 6,000 g/mol.

In addition, the isocyanate (Diisocyanate) is toluene diisocyanate (Toluene diisocyanate (TDI)), 4,4'-diphenylmethane diisocyanate (4,4'-Diphenylmethane diisocyanate (MDI)), hexamethylene diisocyanate (Hexamethylene diisocyanate ( HDI)), at least one selected from the group consisting of isophorone diisocyanate (IPDI) and 4,4'-methylenebis (cyclohexyl isocyanate) (HMDI) this can be used

In addition, as the radical initiator, at least one selected from benzoyl peroxide (BPO) and azobisisobutyronitrile (AIBN) may be used.

In addition, the biomass polyurethane resin includes 60 to 80 parts by weight of the polyester polyol, 10 to 20 parts by weight of an organic solvent, 20 to 30 parts by weight of a bio multifunctional polyol compound, and isocyanate (Isocyanate). ) prepared by adding 0.1 to 0.5 parts by weight of a radical initiator to 5 to 15 parts by weight and reacting for 5 to 7 hours while purging nitrogen at a temperature of 130 to 150 ° C. (N ₂ gas purging), the biomass polyurethane resin ( Biomass Polyurethane Resin) may have a weight-average molecular weight (Mw) of 30,000 to 50,000 g/mol.

The TPO (Thermo Plastic Polyolefine; thermoplastic polyolefin elastomer) resin has excellent tensile strength and processability. It has excellent waterproofness and wind resistance, and above all, it is an eco-friendly thermoplastic material and has high mechanical strength.

For example, the TPO (Thermoplastic Polyolefine) resin is from the group consisting of PE (Polyethylene) resin, PP (Polypropylene) resin, polybutylene resin, ethylene-propylene copolymer resin, and ethylene-vinyl alcohol copolymer resin Any one or more selected resins may be used.

The silicone compound may be represented by the formula -R2Si-O-SiR2- (where R=CH ₃ ), and the silicone compound has unique flexibility, chemical resistance, UV resistance, flame retardancy, environmental friendliness, non-toxicity, and a wide temperature range. availability and stability. These properties are being applied as high-tech materials for sealants, gaskets, rubber molding, and heat dissipation.

In the present invention, in the silicon compound, the radical of the peroxide reacts with the silicon to take hydrogen from the silicon to stabilize the peroxide, activate the silicon, and the activated silicon causes a chain reaction to form a stabilized silicon network. In this way, the stabilized silicon network serves as a barrier between the heat sources to block heat supplied from the secondary heat source and prevent the inflow of oxygen.

The peroxide may be used to improve crosslinking properties. For example, the peroxide may include dicumyl peroxide (DCP), 1,1-di-(tert-butylperoxy)-3,3, 5-trimethylcyclohexane [1,1-di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane], di-(2-tert-buty-peroxyisopropyl)-benzene [di-(2-tert -buty-peroxyisopropyl)-benzene], butyl-4,4-bis(tert-butyldioxy) valerate [Butyl 4,4-bis(tert-butyldioxy) valerate], di-(2,4-dichlorobenzoyl) -peroxide [Di-(2,4-dichlorobenzoyl)-peroxi de], di-(2,4-dichlorobenzoyl)-peroxide [Di-(2,4-dichlorobenzoyl)-peroxide], dibenzoyl peroxide ( Dibenzoyl peroxide], tert-Butyl peroxybenzoate, tert-Butylcumylperoxide, 2,5-dimethyl-2,5-di-(tert-butylperoxy)- Hexane [2,5-Dimethyl-2,5-di-(tert-butylperoxy)-hexane], Di-tert-butylperoxide and 2,5-dimethyl-2,5-di( At least one selected from the group consisting of tert-butylperoxy)hexyme-3 [2,5-dimethyl-2,5-di(tertbutylperoxy)hexyme-3] may be used.

The flame retardant satisfies Restriction of Hazardous Substances (RoHS), and brominated flame retardants may be used as the flame retardant. In general, halogen flame retardants compete with oxygen for radicals generated in a combustion process, and halogenated radicals are chained. It does not propagate the reaction, so the fire goes out.

Specifically, active radicals OH and active radicals H, which play a role in driving combustion, are trapped and stabilized by HX, and HX is non-flammable and has a dilution effect and an oxygen blocking effect, so flame retardancy is exhibited.

Among halogens, iodine is the most effective flame retardant element, but is expensive and lacks heat resistance and light resistance.

In contrast, bromine is the second most effective flame retardant element after iodine and is most widely used because it can produce a high flame retardant effect in a small amount that does not affect the physical properties of the polymer. In particular, the phenomenon that only traces of carbonization are visible after digestion is a distinctive feature from existing flame retardants.

For example, in the present invention, the brominated flame retardant includes tetrabromobisphenol-A (tetrabromobisphenol-A TBBA, TBBPA), tetrabromobisphenol-A ether, 1,2-bis (tribro 1,2-bis(tribromophenoxy)ethane, 2,4,6-tribromophenyl glycidyl ether, tetrabromophthalic anhydride (tetrabromophthalic anhydride), dimethyl 4-bromophthalate, tetrabromo phthalic disodium, decabromodiphenyl ether, decabromodiphenyl oxide , DBDPO), decabromodiphenyl ethane (DBDPE), 1,4-bis (pentabromophenoxy) tetrabromobenzene (1,4-bis (pentabromophenoxy) tetrabromobenzene), tribromophenoxyethane (tribromophenoxy ethane), 1,2-bis(pentabromophenyl)ethane, bromo trimethylphenyl indane, pentabromobenzyl acrylate At least one selected from the group consisting of pentabromodiphenyl benzyl bromide and hexabromobenzene may be used, and preferably the brominated flame retardant is decabromodiphenyl ethane, DBDPE) may be used.

The flame retardant adjuvant consists of flame retardant compounds such as antimony trioxide and antimony pentoxide, metal antimony and antimony trichloride such as sodium antimonate, aluminum hydroxide, magnesium hydroxide, zinc borate, zinc stannate, molybdate, zirconium, and mixtures thereof. It may be selected from the group, preferably, antimony trioxide may be used as the flame retardant adjuvant.

The antimony compound itself has extremely limited flame retardancy, but when combined with a halogenated flame retardant, it exhibits a synergism effect that greatly increases the radical trapping effect.

Typically, the antimony trioxide reacts with halogen to generate SbOCl and SbCl ₃ , SbCl generates HCl to exhibit a radical trapping effect, SbCl ₃ is also a heavy gas and exhibits an oxygen shielding effect, and SbOCl exhibits a dehydrocarbonization action. do.

The filler may be used to increase the strength of the surface protection layer formed of the surface protection composition, talc may be used as the filler, and the talc has a hardness (morhs) of 3.0 and a specific gravity of 2.5 to 2.8, Those having a specific surface area of 0.036 to 1 m ² /g may be used.

The antioxidant is used to prevent deterioration during processing, prevent contamination as much as possible, and extend the lifespan of the construction sheet. For example, the antioxidant is Tetrakis [methylene-3-(3,5-di-tert- butyl-4-hydroxyphenyl) propionate] selected from the group consisting of methane, Tris (2,4-di-tert-butylphenyl) phosphite and 1,2-bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamoly) hydrazine Any one or more may be used.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the building sheet according to the present invention will be described in more detail.

< Example >

A construction sheet including a substrate layer, a coating layer formed on both sides of the substrate layer, and a printing film layer formed on the coating layer on one side of the substrate layer was manufactured.

At this time, the base layer was prepared by mixing high density polyethylene (HDPE) and low density polyethylene (LDPE), and the coating layer was a base resin, ethylene-methyl acrylate copolymer 98 A coating liquid composition consisting of 0.5 wt% of polypropylene as a reactive agent and 1.5 wt% of glycidyl methacrylate as an initiator was applied to both sides of the base layer and then dried.

<Comparative Example>

A construction sheet having the same structure as in the above example was manufactured. In the comparative example, an acrylic resin was applied to both sides of the substrate layer, and then a print film layer was formed.

1. Adhesion strength

After the construction sheet manufactured according to Examples and Comparative Examples was installed on the door of a building and constructed, peeling or lifting of the construction sheet was observed 3 months later.

division Example comparative example Whether peeling or lifting X O

Referring to [Table 1], it was confirmed that the construction sheet prepared according to the example had enhanced adhesion even after construction and did not cause peeling or lifting, but the construction sheet according to the comparative example was partially peeled or lifted.

2. Measurement of adhesion and salt spray test

An adhesion test and a salt spray test were performed on the coating composition used in Examples and the construction sheet using the acrylic resin according to the comparative example, and the results are shown in [Table 2] below.

The adhesion test using the coating liquid composition used in the above examples and the acrylic resin according to the comparative example was performed by ASTM D-4541, Pull-off adhesion Test / Dolly Test, and the coating liquid composition used in the above example and the comparative example Salt spray test using acrylic resin was performed after KS D-9502, Salt Spray Test/3,000 hours.

division Example comparative example Adhesion (MPa) 20 or more (adhesive drop off) 12~15 (dropped if possessed) Salt spray test (hours) 3,000 (Good) 2,000 (Good)

Referring to [Table 2], it can be confirmed that the coating liquid composition used in the above example has excellent adhesion and salt spray.

3. Measurement of physical properties

Physical properties such as tensile strength and flexural strength of the construction sheets prepared according to the above Examples and Comparative Examples were measured, and the results are shown in [Table 3] below.

division Example comparative example Tensile strength (MPa) 58.6 44.0 Flexural strength (MPa) 83.5 62.4 Impact resistance (500g×1/2inch×50cm) nothing strange occurrence of micro cracks pencil hardness more than 4H 3H Moisture vapor transmission rate (g/m ² 24hr) 0.03 0.07 Abrasion resistance (mg) 35 87

Referring to [Table 3], it was confirmed that the building sheets manufactured according to the examples had excellent physical properties such as tensile strength, flexural strength, impact resistance, and abrasion resistance, compared to those of the comparative examples.

Although the preferred embodiment of the present invention has been described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to. Therefore, one embodiment described above should be understood as illustrative in all respects and not limiting.

10; construction sheet
100; base layer
200; coating layer
300; layer of printing film

Claims (4)

Including a base resin, a reactant and an initiator,
The base resin is an ethylene-methyl acrylate (Ethylene-Methyl Acrylate) copolymer, the reactive agent is polypropylene, and the initiator is glycidyl methacrylate (glycidyl methacrylate) Adhesion, characterized in that used Sexual coating liquid composition.
According to claim 1,
The ethylenemethyl acrylate copolymer is 97 to 99% by weight, the polypropylene is 0.1 to 1.0% by weight, and the glycidyl methacrylate is contained in a weight ratio of 0.5 to 2.0% by weight Adhesive coating solution, characterized in that composition.
A substrate layer 100, a coating layer 200 formed on both sides of the substrate layer 100, and a print film layer 300 formed on the coating layer 200 on one side of the substrate layer 100,
The base layer 100 is made of a polyolefin-based resin, and the coating layer 200 is formed by applying a coating liquid composition on both sides of the base layer 100 and then drying it, wherein the coating liquid composition includes a base resin, a reactant and an initiator. Construction sheet using an adhesive coating liquid composition comprising a.
According to claim 3,
The polyolefin-based resin is high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), ethylene-octene copolymer, Composed of ultra low density polyethylene, medium density polyethylene, ethylene-propylene copolymer, ethylene-butene copolymer and polypropylene At least one selected from the group,
Ethylene-Methyl Acrylate copolymer is used as the base resin, polypropylene is used as the reactive agent, and glycidyl methacrylate is used as the initiator,
The ethylenemethyl acrylate copolymer is 97 to 99% by weight, the polypropylene is 0.1 to 1.0% by weight, and the glycidyl methacrylate is contained in a weight ratio of 0.5 to 2.0% by weight Adhesive coating solution, characterized in that Construction sheet using the composition.

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