KR20110030995A - Method of preparing sheet for road sign and using method thereof - Google Patents

Abstract

PURPOSE: A method for manufacturing a sheet for road marking and a method for using the same are provided to reduce time and costs for road marking, compared with direct painting, since construction is facilitated on site. CONSTITUTION: A method for manufacturing a sheet for road marking comprises following steps. A frame(20) is installed on a release paper(10). As composition for a film is applied on the inside of the frame, a film is formed. Functions are applied on the film. The film is solidified. After the composition for a top coaling layer is applied on the film and solidified, a top coating layer(50) is formed. The frame is removed.

Description

       Method of preparing sheet for road sign and using method

       The present invention relates to a method for manufacturing a paint display sheet and a construction method thereof, and to a method for manufacturing a paint display sheet manufactured by applying a top coat layer after curing and forming a coating film inside a frame, and a method for constructing the same. .

       The development of means of transport, in particular the development and dissemination of motor vehicles, has led to more, wider and more complex roads, so that more roads intersect and more information about the roads in the operation of cars There is also a growing need to be communicated to the driver.

       As a means to convey information to the driver about the road, that is, the destination in the direction of travel, information about the area where the road is currently passing, information about road crossings and speed limits around the road Road signs with poles and signboards with information about the roads are commonly used.

       In addition, the information of the destination about the speed limit and the direction of travel may be directly applied on the road surface and displayed in letters or figures. The information on the road surface is mainly coated with a road marking paint on the road surface. Is displayed. Road marking paints have been developed and used in various kinds of road surfaces, especially in special areas where danger exists such as bus lanes, child protection zones, road skidding, slopes and in front of schools. In order to enhance the visibility of the driver, the road surface is painted in various forms.

Among the above methods, organic solvent type, water-soluble and fusion type products are mainly used in the lanes. However, existing paint products have weak physical properties such as durability, brightness maintenance, abrasion resistance, crack resistance, and adhesiveness, which causes the driver's visibility to rapidly deteriorate in a short time, causing traffic accidents, and costly by repainting frequently. Element occurs. In addition, the conventional direct coating in the special zone takes an excessive cost and time, in particular caused a lot of inconvenience due to traffic jams and the generation of residual by-products.

The present invention is to provide a method for producing a sheet for road marking excellent in low temperature curing, environmentally friendly, slip resistance, wear resistance, adhesion, crack resistance and the like.

 The present invention provides a construction method of the road marking sheet.

One aspect of the present invention comprises the steps of installing a frame on the release paper; Forming a coating film by applying a coating composition to the inside of the frame; Imparting functionality on the coating film; Curing the coating film; Forming a top coat layer by applying a composition for top coat coating on the coating layer and curing the top coat composition; And it relates to a method of manufacturing a road marking sheet comprising the step of removing the frame.

Another aspect of the present invention comprises the steps of engraving asphalt with heat supply equipment; Applying and curing an adhesive layer on the engraved portion of the asphalt; A method of constructing a road marking sheet comprising the step of installing the road marking sheet manufactured according to any one of claims 1 to 5 on the adhesive layer before the curing is completed.

The road sign sheet according to the present invention can easily implement information on the road surface, high film strength, adhesion to asphalt and concrete roads, flexibility and road surface, which are more required for use in special area coatings such as bus lanes. The construction is very simple, which can significantly reduce the cost and time compared to the direct painting.

       Hereinafter, the present invention will be described in detail.

1 is a schematic view showing a method for manufacturing a road marking sheet according to the present invention. Referring to FIG. 1, in the manufacturing method, a frame 20 is installed on a release paper 10, and a coating film composition is applied to the inside of the frame 20 to form a coating film 30. Subsequently, a functional material 40 such as a phosphorescent pigment or a glass egg is applied onto the formed coating film 30 to cure the coating film. When the curing is completed, after coating the composition for the top coat on the coating film and cured to form a top coat layer 50 (1d), after completion of the curing to remove the frame (1e).

Referring to Figure 1a, as the release paper, known release paper can be used without limitation. As an example, release-treated paper having a weight of 50 to 150 g / m 2 or a polyester film or polypropylene film having a thickness of 25 to 100 μm may be used, and it is preferable that the film is easily peeled off from the coating film.

The frame on the release paper can use plastics, metals, wood, etc. without limitation as long as the frame serves to maintain the shape of the coating composition.

Referring to FIG. 1B, the coating film composition is applied to the inside of the frame to form the coating film 30. The said composition for coating films is mentioned later.

The coating film 30 may be manufactured to have a thickness of 1 mm to 2 mm in view of strength and wear resistance. Since the coating film 30 is combined with the coated adhesive on the asphalt at the site where the release paper is removed at a later site construction, it is preferable to manufacture the coating layer 30 using a resin having excellent bonding strength with the adhesive. In addition, the coating film 30 may easily display information such as a special zone display on the upper portion, or it is preferable that grooving is easy.

Referring to FIG. 1C, the method includes imparting functionality on the coating film 30. The method of imparting functionality to the coating film may include applying a functional material 40 such as a retroreflective body, a photoluminescent pigment or a glass egg, forming a grooving on the coating film, or performing a drawing operation such as a character or a figure for displaying a special area. It includes.

The functional provision step is a step of drawing the speed display, letters, safety marks and the like on the coating film. More specifically, it is a step of displaying a direction mark, a stop line, a speed bump, a crosswalk, a number, Korean or English letters on a coating film. In the functional provision step, more various designs can be easily made on the coating film when the sheet is pre-designed as in the above method than the construction in the field.

As a retroreflector suitable for use in the method of the present invention, a known retroreflector (retroreflector) can be used. In one example, the retroreflector is preferably substantially circular in shape to provide uniform and efficient retroreflection. The retroreflector may also be very transparent to minimize absorption of light so that a large proportion of incident light is retroreflected. Retroreflectors are often substantially colorless, but in some cases may be colored or colored. Retroreflectors can be made of glass, non-glassy ceramic compositions, or synthetic resins. In general, it is preferred to be made of glass and ceramic. Examples of known retroreflectors include US Pat. Nos. 1,175,224, 2,464,011, 2,726,161, 2,842,446, 2,853,393, 2,870,030, 2,939,797, 2,965,921, 2,992,122, 3,468,681 3,946,130, 4,192,576, 4,367,919, 4,564,556, 4,758,469, 4,772,511 and 4,931,414.

The photoluminescent pigments include zinc sulfides obtained by adding copper (Cu) to zinc sulfide (ZnS): copper sulfate (Zinc Sulfide Copper Doped (ZnS: Cu)), aluminum oxide, calcium oxide, and calcium oxide. Products composed of Strontium Oxide, Europium Oxide, Boron Oxide, Alkaline Aluminate, Alkaline Silicate, etc. can be used, and can be used partially mixed.

The glass ball serves to improve the visibility of the driver at night to enhance the safety, the particle size is preferably 0.03 to 1mm.

The glass grains may be used in a range of 10 to 30 parts by weight based on 100 parts by weight of the main composition of the coating film, when less than 10 parts by weight may have a problem that the night visibility effect is lowered, more than 30 parts by weight When the effect of visibility is not increased proportionally, rather there is a problem that the workability of the paint worsens and the tensile strength is lowered.

The retroreflective body or the phosphorescent pigment may be used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the main composition of the coating film composition.

As a method of forming a groove (groove) for preventing slipping on the coating film, a known grooving device or method can be used. Alternatively, any device or tool capable of forming a groove on the coating film may be used.

When the functional material is applied or grooved is formed on the coating film it can be cured by applying heat for about 2 minutes at 30 ~ 50 ℃.

Referring to FIG. 1D, after curing of the coating film is completed, a composition for top coat is coated on the coating film. Subsequently, heat is applied at 30 to 50 ° C. for about 2 minutes to cure. The top coat layer is formed by coating a composition for top coat having a function of preventing falling of a functional material with a thickness of 0.1 mm to 0.2 mm. The composition for the top coat will be described later.

When curing is complete, the frame is removed and the manufactured road marking sheet is stored (FIG. 1E).

Coating composition

The coating composition includes 1 to 10 parts by weight of a curing agent based on 100 parts by weight of the main ingredient, and 50 to 150 parts by weight of the reaction monomer, 1 to 20 parts by weight of the reaction catalyst, and 10 to 30 organic isocyanates, based on 100 parts by weight of the unsaturated polyester resin. It may include a weight part, 50 to 150 parts by weight of silica, 100 to 200 parts by weight of the filler and 50 to 100 parts by weight of the coloring pigment.

Unsaturated polyester resin used in the present invention is a binder resin, after being applied and cured to concrete, asphalt, marble, steel, etc., after being closely adhered to the surface of the road and remaining for a long time, the above-mentioned pigment and glass beads, etc. It has the basic function to keep it firmly on the surface, and has improved flexibility, road surface adhesion, slip resistance, chemical resistance, and crack resistance than conventional solvent-free paints such as fusion type, solvent type, and epoxy type. Function as an adhesive

The unsaturated ester resin can be prepared by polymerized modification of glycol, phthalic acid and methyl methacrylate (MMA). Preferably, glycols having two or more functional groups (Glycol), phthalic acid (Phthalic acid) having two functional groups, and methyl metal acrylate (Methyl metacrylate, MMA) may be obtained by polymerization. The MMA is not environmentally harmful, and in the case of SM (Stylene Monomer), which is widely used, the shrinkage of the coating film is left and right shrinkage, whereas when MMA is applied, it appears as up and down shrinkage. It is less phenomena of pulling out asphalt and has excellent elasticity and crack resistance.

The unsaturated polyester resin used in the present invention may be prepared to polymerize methyl metal acrylate in addition to the polymerization-modified resin so as to have a molecular weight of 12,000 to 17,000. If the molecular weight is less than 12,000 may cause cracking of the winter coating film, and if it exceeds 17,000, there is a problem that workability worsens due to the fall of the summer coating film and the increase of viscosity.

The subject matter includes reaction monomers that participate in the polymerisation reaction during the curing reaction and also undergo urethane reactions with isocyanates. The reaction monomer may function to adjust the workability of the coating composition and the hardness of the product.

As the reaction monomer, one or more selected from methyl metal acrylate (MMA), 2-hydroxyethyl methacrylate (2-Hydroxyethyl metacrylate) and BAM (Butyl acrylate monomer) may be used.

The reactive monomer may be 50 to 150 parts by weight, preferably 70 to 120 parts by weight relative to 100 parts by weight of the unsaturated polyester resin. If it is out of the range there is a problem that complete curing is not made.

As the reaction catalyst, DMA (dimethyl aniline) and Co-octate (cobalt octate) may be used, and DMA and Co-octate may be used simultaneously.

The reaction catalyst may be used in 1 to 20 parts by weight based on 100 parts by weight of unsaturated polyester resin. If it is less than 1 part by weight, the curing time is too late, the working time is long, and the complete curing of the surface is delayed, and there is a problem of contamination. If the amount is more than 20 parts by weight, the gelling phenomenon is rapidly progressed during product storage. Rapid self-heating due to rapid hardening can cause a lot of shrinkage and color change.

The subject matter of the coating composition according to the present invention may include 10 to 30 parts by weight of organic isocyanate based on 100 parts by weight of the unsaturated polyester resin.

The organic isocyanate group is methylene diisocyanate, methylene di (bis) phenyl isocyanate, phenylene diisocyanate, chlorophenylene diisocyanate, α, α'-xylene diisocyanate, toluene diisocyanate, 1,5--naphthalene diisocyanate, iso One or more selected from poron diisocyanate, methylenebis (cyclohexyl isocyanate), or cyclohexylene diisocyanate (1,2-; 1,3-; or 1,4-) can be used.

Among the road marking compositions, especially for bus lanes, special zone coatings, etc., it is necessary to satisfy the high film strength, adhesion and flexibility required for grafting on asphalt and concrete roads. Furthermore, in the case of bus-only cars, the entire road must be applied. In this case, even in the case of the unsaturated polyester alone, the shrinkage force during curing acts left and right, and when the thickness is applied more than 1 mm, the shrinking force catches ascon. It is pulled out.

The coating composition is a urethane reaction of a reactive monomer having a -OH group, such as MMA, 2-HEMA, HPMA and the like, including an organic isocyanate group, and a curing agent (Peroxide) to the urethane bond coexist in the unsaturated ester bond. Due to the coexistence of the urethane bonds can be obtained a strong yet flexible coating by solving the curable shrinkage problem that may occur during curing of the unsaturated polyester resin.

The organic isocyanate group may be used 10 to 30 parts by weight based on 100 parts by weight of the unsaturated polyester resin. Outside the above range, there is a problem that the coating state becomes stronger and the pot life is shortened.

The composition comprises 50 to 150 parts by weight of silica relative to 100 parts by weight of unsaturated polyester resin. The silica functions to prevent slippage of the road marking sheet and to maintain hardness of the product, that is, to prevent sheet agglomeration. The silica particle size is preferably 1 to 2mm.

The composition may be an inorganic filler and a functional filler. The inorganic filler may be used calcium carbonate or dolomite. The inorganic filler functions to improve the mechanical properties of the coating film formed after the coating film composition is cured to increase the durability of the coating film so that the road sign remains long. When the amount of the inorganic filler is too small, there may be a problem that the mechanical properties of the coating film is lowered durability is reduced, on the contrary, if too much, there is a problem that decreases the essential content of the other components to inhibit the physical properties of the composition have.

Functional fillers include a mapper or a ceramic, and the ceramic may include silica sand, crystallites, ultra-light microspheres (hollow pigments, western diameters), porous pigments (perlites, sage), and the like. The ceramic is preferably a particle size of 0.05 to 1mm.

The filler may include 100 to 200 parts by weight, preferably 100 to 120 parts by weight relative to 100 parts by weight of the unsaturated polyester resin. It is more preferable to use the inorganic filler and the functional filler at the same time, in which case the inorganic filler and the functional filler can be used in a weight ratio of 1: 1.5 to 2.

The composition may include a coloring pigment that provides a visual effect by imparting color to the coating film. The coloring pigment may be used to express the coating film in a desired color, and to select and use a suitable pigment according to a predetermined color. Such coloring pigments may be known to those skilled in the art and may be used commercially. For example, iron, iron sulfur, TiO ₂ .

The curing agent used in the present invention may be granular benzoyl peroxide (hereinafter BPO) or CABPO. The CABPO is in the form of a liquid paste in which the BPO is dispersed in dibutyl phthalate (DBP). The DBP also serves to make the coating film by acting as a plastic film.

The BPO contained in the CABPO may be 30 to 80% by weight. The BPO may be in the form of granules (granule) formed in a particle size of 0.01 ~ 0.3mm size. If the particle size of the BPO is less than 0.01mm, it does not flow in the line of the coating equipment, but clogged by the surrounding moisture, if it exceeds 0.3mm, there is a problem that the solubility is significantly reduced when mixing with the main body.

The curing agent may include 1 to 10 parts by weight based on 100 parts by weight of the main ingredient. Outside the above range, there is a problem in that partial curing or curing is shortened.

Top coat  Composition

The top coat composition may include 50 to 150 parts by weight of methyl methacrylate (MMA), 1 to 20 parts by weight of a reaction catalyst and 25 to 75 parts by weight of a curing agent based on 100 parts by weight of an unsaturated polyester resin (molecular weight 12,000 to 17,000). have.

Features of the components used in the composition for top coat are described above in the coating composition, and thus description thereof is omitted.

In another aspect, the present invention relates to a method of using the road marking sheet.

The method includes engraving asphalt with heat supply equipment in a manufacturing method; Applying and curing an adhesive layer on the engraved portion of the asphalt; And installing the road marking sheet on the adhesive layer before the curing is completed.

Figure 2 is a schematic diagram of the construction method of the road marking sheet manufactured by the present invention. Referring to FIG. 2, first, the method cleans the road floor, and then presses the asphalt surface with a heat supply device such as an iron equipment to engrave the width and thickness of the sheet to be inserted. The adhesive is then applied to the engraved interior. The adhesive is formed of 20 to 50 parts by weight of the curing agent, 30 to 70 parts by weight of the filler and 1 to 10 parts by weight of the reaction catalyst with respect to 100 parts by weight of the unsaturated polyester resin. The sheet is mounted on the adhesive and then pressed to adhere to the engraved asphalt before the curing of the adhesive is complete. The adhesive has excellent adhesion to asphalt concrete, metal surface, etc. and at the same time is integrated with the seat according to the present invention, the dropout due to the deterioration of the interlayer adhesion can be minimized by the vehicle. In addition, since the sheet is inserted into the inside of the road marking sheet is engraved (concave), there is no phenomena such as slippage, falling off, noise generated while driving the vehicle, which is caused by the end of the sheet protruding from the road surface.

Since the unsaturated polyester resin, the curing agent, the filler and the reaction catalyst have been described above, a description thereof will be omitted.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the following Examples are intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example  One

After preparing the release paper and the frame, a coating film composition having the following composition was applied to the inside of the frame.

As a binder resin, methyl metal acrylate (MMA), 2-hydroxyethyl methacrylate (2-HEMA), butyl acrylate monomer (BAM) modified unsaturated polyester (SRS-3000 Methyl metal acrylate (MMA) was further polymerized to obtain an unsaturated polyester resin having a molecular weight of 15,000 .

The main subject is 10 kg of the unsaturated ester (molecular weight 15,000), 10 kg of reaction monomer (MMA, BAM, 2-HEMA, LG MMA), 0.2 kg of DMA (N, N-Dimethylaniline, AKZO NOBEL) as a reaction catalyst, cobalt octate (( Co 8%, TPM Chem 0.1kg, Dimethyl Isocyanate (PAPI 135, Kumho Petrochemical) 2kg, Silica (SILICA S-80, Hannam Material) 10kg, Inorganic filler calcium carbonate (Dolomite Bicarbonate S-500H, Rexem ) 4kg, 7kg ceramic (MSD-1000, Seokyeong), 5kg colored pigment (IRON OXIDE RED, Ilshin), and 2kg mixed with BPO curing agent (BPO-50-DCHP, Jiangsu Qiangsheng Chem or CABPO) It was.

Subsequently, the composition was applied in a frame, and then a graphic work and grooving were formed for marking a special zone, and 10 kg of glass beads (Chem Plus) were applied. Continue for 10 minutes using 30-40 degrees oven The coating was cured for a while. When the curing is completed, 10 kg of unsaturated polyester resin (manufactured by SRS-3000), 10 kg of methyl metacrylate (MMA), 0.2 kg of DMA (N, N-Dimethylaniline, AKZO NOBEL), and cobalt octane (( Top coat coating composition containing 0.1 kg of Co 8%, TPM Chem) and 1 kg of BPO curing agent (BPO-50-DCHP, Jiangsu Qiangsheng Chem or CABPO, Geumjeong) was applied to the coating film and cured under the same conditions. After curing, the frame was removed to obtain a road marking sheet.

[Test Example]

In order to determine the difference between the physical properties of the coating composition and the existing product according to the present invention, the difference in physical properties with respect to the slip resistance, curability, low temperature hardenability, adhesion, elongation, tensile strength of the road marking sheet prepared in Example 1 Tested.

The slip resistance was measured on the coating film after spraying water according to the test method ASTM E-303: 2003, the curability was measured by the vehicle passable time under the same conditions, the bending resistance and the adhesion was measured by KSM5000. The measured results are shown in Tables 1 and 2 below.

Example 1 Desaturated Type Epoxy Type Fusion Type Slip resistance 30 ~ 90 (according to construction method) Vehicle passage time Within 30 minutes after installation Summer jungle phenomenon none has exist has exist has exist Noise generation none has exist has exist has exist

* Only Example 1 satisfies all the relevant standards.

* The blanks of other types do not have detailed data, but they are considered to be allowed to enter the standard when adjusting the product.

1A to 1F are schematic views showing a method for manufacturing a road marking sheet according to the present invention.

Figure 2 is a schematic diagram of the construction method of the road marking sheet manufactured by the present invention.

* Brief description of the main parts of the drawing

10: release paper 20: frame

30: coating film 40: functional material

50: top coating layer

Claims (7)

Installing the frame on the release paper; Forming a coating film by applying a coating composition to the inside of the frame; Imparting functionality on the coating film; Curing the coating film; Forming a top coat layer by applying a composition for top coat coating on the coating layer and curing the top coat composition; And The method of manufacturing a road marking sheet comprising the step of removing the frame. According to claim 1, wherein the coating composition comprises 1 to 10 parts by weight of the curing agent relative to 100 parts by weight of the main body, the main body is 50 to 150 parts by weight of the reaction monomer relative to 100 parts by weight of unsaturated polyester resin, 1 to 20 parts by weight of reaction catalyst 10 to 30 parts by weight of organic isocyanate 50 to 150 parts by weight of silica 100 to 200 parts by weight of the filler and  A method of manufacturing a road marking sheet comprising 50 to 100 parts by weight of the coloring pigment. The method of claim 2, wherein the unsaturated polyester resin is polymerized with methyl methacrylate (MMA) such that its molecular weight is 12,000 to 17,000. The method of manufacturing a road marking sheet according to claim 1, wherein the imparting the functionality comprises applying at least one of a phosphorescent pigment, a glass egg, or a retroreflective element on the coating film. The method of manufacturing a road marking sheet according to claim 1, wherein the imparting the functionality comprises forming a groove. According to claim 1, wherein the topcoat composition is 50 to 150 parts by weight of methyl methacrylate (MMA) relative to 100 parts by weight of unsaturated polyester resin, 1 to 20 parts by weight of reaction catalyst and Method for producing a road marking sheet comprising 25 to 75 parts by weight of a curing agent. Engraving the asphalt with heat supply equipment; Applying and curing an adhesive layer on the engraved portion of the asphalt; A method of constructing a road marking sheet comprising the step of installing the road marking sheet manufactured according to any one of claims 1 to 6 on the adhesive layer before the curing is completed.

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