KR102146483B1 - Graphic film for road surface with high durability, high visibility and anti-slip function - Google Patents

Abstract

The present invention relates to a graphic film for a road surface, which comprises: a first transparent coating layer; an image printing layer formed on the first transparent coating layer; a second transparent coating layer formed on the image printing layer; and a highly visible anti-slip layer formed on the second transparent coating layer. The first and second transparent coating layers includes: based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, 20 to 50 parts by weight of one or more mixtures selected from a group consisting of alumina powder, silica powder, zirconia powder, magnesium sulfate powder, elvan powder, marble powder, and granite powder: and 1 to 10 parts by weight of one or two or more mixtures selected from a group consisting of fluorinated wax, urethane beads, and acrylic beads. The high-visibility anti-slip layer includes one or more mixtures selected from a group consisting of (i) glass beads and (ii) fly ash, pearlite, zeolite, and silver sand.

Description

GRAPHIC FILM FOR ROAD SURFACE WITH HIGH DURABILITY, HIGH VISIBILITY AND ANTI-SLIP FUNCTION} with high durability, high visibility and anti-slip function

The present invention relates to a graphic film for a road surface that is attached to a road surface to provide various information to pedestrians and/or passing vehicles.

It is installed on the road surface and is a means to provide various information necessary for pedestrians or passing vehicles, including various images for conveying printed information through digital offset, wide format inkjet printer, and screen printer using UV and solvent-based inks. Graphic films are used to partially replace the existing paint composition for road signs.

However, the conventional graphic film for road surfaces is an adhesive vinyl that is provided on the image printing layer to protect the printed image contained in the graphic film quickly abrasion or damage due to frequent passage of pedestrians or vehicles. The edge of the film may deviate over time and may become a risk factor for pedestrians, and the smooth surface of the adhesive vinyl film may cause accidents to pedestrians and vehicles.

Korean Patent Publication No. 10-1935197 (Registration Date: 2018.12.27) Korean Patent Publication No. 10-1665288 (Registration Date: 2016.10.05) Korean Patent Publication No. 10-1050507 (Registration Date: 2011.07.13) Korean Patent Application Publication No. 10-2013-0022245 (published date: 2013.03.06) Korean Patent Application Publication No. 10-2011-0083149 (Published: 2011.07.20)

An object of the present invention is to provide a graphic film for road surfaces having improved visibility and durability as well as an anti-slip function.

In order to achieve the object as described above, the present invention provides a first transparent coating layer; An image printing layer formed on the first transparent coating layer; A second transparent coating layer formed on the image printing layer; And a highly visible non-slip layer formed on the second transparent coating layer, wherein the first transparent coating layer and the second transparent coating layer are a mixture of an aliphatic polyaspartic ester and an aliphatic polyisocyanate 100 Based on parts by weight, 20 to 50 parts by weight of one or more mixtures selected from the group consisting of alumina powder, silica powder, zirconia powder, magnesium sulfate powder, elvan powder, marble powder, and granite powder; 1 to 10 parts by weight of one or two or more mixtures selected from the group consisting of fluorine-added wax, urethane beads, and acrylic beads, and the high visibility anti-slip layer includes (i) glass beads and (ii) fly ash, pearlite , Zeolite and silver sand (銀沙) proposes a graphic film for a road surface, characterized in that it comprises one or two or more mixtures selected from the group consisting of.

In addition, the image printing layer proposes a graphic film for road surfaces comprising an image formed of a latex ink composition on a transparent polymer substrate.

In addition, the aliphatic polyaspartic ester proposes a graphic film for road surfaces, characterized in that it is represented by the following formula:

(In the above formula,

R ¹ and R ² are each independently an alkyl group having 1 to 10 carbon atoms,

R ³ is a branched, unbranched or cyclic aliphatic group having 1 to 20 carbon atoms,

n is 2 to 4).

In addition, the aliphatic polyisocyanate is hexamethylene diisocyanate (HDI), pentamethylene diisocyanate (PDI), 2,2,4-trimethyl-1,6-hexamethylene diisocyanate (2,2,4-trimethyl-1 ,6-hexamethylene diisocyanate), 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (2,4,4-trimethyl-1,6-hexamethylene diisocyanate), dodecamethylene diisocyanate, 1,4-diisocyanatocyclohexane, isophorone diisocyanate (IPDI), 2,4'-diisocyanato-dicyclohexyl methane (2,4'-diisocyanato-dicyclohexyl methane) ) And 4,4'-diisocyanato-dicyclohexyl methane (4,4'-diisocyanato-dicyclohexyl methane) proposes a graphic film for a road surface, characterized in that selected from the group consisting of.

In addition, the aliphatic polyaspartic ester and the at least one aliphatic polyisocyanate are mixed in a weight ratio of 1: 1 to 3: 1 to propose a graphic film for road surfaces.

In addition, the high-visibility anti-slip layer, (i) glass beads and (ii) fly ash, pearlite, zeolite and a mixture of two or more selected from the group consisting of, 1: 30 to 5 : It proposes a graphic film for road surface, characterized in that it includes in a weight ratio of 1.

In addition, the high-visibility anti-slip layer proposes a graphic film for road surfaces, further comprising 20 to 60 parts by weight of calcite powder based on 100 parts by weight of glass beads.

The graphic film for a road surface according to the present invention includes a highly durable first transparent coating layer that prevents damage to the image print layer on which various texts and/or images are printed, and a highly visible anti-slip layer having improved visibility and anti-slip function. It has improved visibility and durability as well as excellent anti-slip function, in particular, by the first transparent coating layer and the second transparent coating layer based on a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate. It prevents yellowing caused by ultraviolet rays and shows excellent adhesion to the road surface without using any organic solvents.

1 is a schematic cross-sectional view of a graphic film for road surfaces having high durability, high visibility, and anti-slip functions according to the present invention.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Since the embodiments according to the concept of the present invention can apply various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific form of disclosure, and should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in the present specification 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 indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of a set feature, number, step, action, component, part, or combination thereof, but one or more other features or numbers It is to be understood that the possibility of addition or presence of, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

Hereinafter, the present invention will be described in detail.

As shown in FIG. 1, the graphic film 1 for road surfaces according to the present invention includes a first transparent coating layer 11, an image printing layer 12, a second transparent coating layer 13, and a highly visible anti-slip layer ( 14) has a sequentially stacked structure, and the image printing layer 12 includes a transparent polymer substrate 21 and various texts and/or images printed on the transparent polymer substrate 21 using latex ink, etc. The image layer 22 may be included.

Here, the first transparent coating layer 11 and the second transparent coating layer are based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, alumina powder, silica powder, zirconia powder , 20 to 50 parts by weight of one or two or more mixtures selected from the group consisting of magnesium sulfate powder, elvan powder, marble powder, and granite powder; It comprises 1 to 10 parts by weight of one or two or more mixtures selected from the group consisting of fluorinated wax, urethane beads, and acrylic beads.

The first transparent coating layer 11 and the second transparent coating layer are obtained from a mixture of an aliphatic polyaspartic ester and an aliphatic polyisocyanate and contain a binder for bonding other constituents such as glass beads, and thus conventional epoxy or aromatic Unlike polyurea, yellowing hardly occurs, and color, texture, and gloss are further improved due to aliphatic properties.

The aliphatic polyaspartic ester may be represented by Formula 1 below.

<Formula 1>

(In the above formula, R ¹ and R ² are each independently an alkyl group having 1 to 10 carbon atoms, R ³ is a branched, unbranched or cyclic aliphatic group having 1 to 20 carbon atoms, and n is 2 to 4) .

A preferred example of the aliphatic polyaspartic ester represented by Formula 1 is a polyaspartic ester amine represented by Formula 2 below.

<Formula 2>

In addition, the average amine equivalent of the aliphatic polyaspartic ester may be 279 to 333, and two or more aliphatic polyaspartic esters may be mixed and added to achieve the above numerical range. For reference, the lower the amine equivalent, the more active the reactivity and thus the shorter pot life, whereas the higher the equivalent, the relatively longer pot life.

The aliphatic polyisocyanate refers to any aliphatic organic compound containing two or more reactive isocyanate groups (-NCO) in a single molecule. Particularly useful aliphatic polyisocyanates in the present invention are hexamethylene diisocyanate (HDI), pentamethylene diisocyanate (PDI), 2,2,4-trimethyl-1,6-hexamethylene diisocyanate (2,2,4-trimethyl -1,6-hexamethylene diisocyanate), 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (2,4,4-trimethyl-1,6-hexamethylene diisocyanate), dodecamethylene diisocyanate ), 1,4-diisocyanatocyclohexane, isophorone diisocyanate (IPDI), 2,4'-diisocyanato-dicyclohexyl methane (2,4'-diisocyanato-), 1,4-diisocyanatocyclohexane dicyclohexyl methane) and 4,4'-diisocyanato-dicyclohexyl methane (4,4'-diisocyanato-dicyclohexyl methane).

On the other hand, the aliphatic polyaspartic ester and the aliphatic polyisocyanate are preferably mixed in a weight ratio of 1:1 to 3: 1 from the viewpoint of controlling the rigidity and viscoelasticity of the network structure of the binder formed in the reaction thereof.

The at least one inorganic powder selected from the alumina powder, silica powder, zirconia powder, magnesium sulfate powder, elvan powder, marble powder and granite powder is 20 based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate. It is contained in an amount of ~ 50 parts by weight, and adjusts the fluidity of the composition for obtaining the first transparent coating layer and the second transparent coating layer as a filler and/or extender, and in the volume of the first transparent coating layer and the second transparent coating layer obtained after curing Therefore, the cost per material volume can be made cheaper.

In addition, the first transparent coating layer and the second transparent coating layer, based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, 1 to 10 parts by weight of fluorinated wax, silicone beads, and at least one of urethane beads. By including it, it is possible to improve antifouling properties by imparting hydrophobicity to the graphic film for road surfaces.

In addition, the first transparent coating layer and the second transparent coating layer may further include 1 to 5 parts by weight of seaweed powder based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, and the Meerschaum stones play a role of preventing precipitation due to a difference in specific gravity between components for binder synthesis (aliphatic polyaspartic esters and aliphatic polyisocyanates) and other components.

Further, the first transparent coating layer and the second transparent coating layer are group consisting of polybutadiene (BR), synthetic polyisoprene (IR), natural rubber (NR), butadiene copolymer, isoprene copolymer, and ethylene/conjugated diene copolymer. 5 to 10 parts by weight based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate may further be included.

The various elastomers and mixtures of these polymers not only allow other components to be uniformly dispersed in the binder, but also improve abrasion resistance and impact resistance of the graphic film for road surfaces according to the present invention.

In addition, in order to improve the tear resistance of the first transparent coating layer and the second transparent coating layer, alpha-(2-amino methyl ethyl)-omega-(2-amino methyl), a polyetheramine having a molecular weight (MW) of 2000 Oxy)-poly(oxy(methyl-1,2-ethanediyl)) ((alpha-(2-Aminomethylethyl)-omega-(2-aminomethylethoxy)-poly(oxy(methyl-1,2-ethanediyl))) , 10 to 30 parts by weight based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, and/or alpha, alpha', alpha "-1,2,3-propane triyl tris (omega -(2-Amino methylethoxy)-poly-oxy (methyl-1,2-ethanediyl)) (Poly[oxy(methyl-1,2-ethanediyl)],.alpha.,.alpha.',.alpha .''-1,2,3-propanetriyltris[.omega.-(2-aminom,ethylethoxy) aliphatic polyaspartic ester and aliphatic polyisocyanate may be added in an amount of 1 to 5 parts by weight based on 100 parts by weight of a mixture.

The high-visibility anti-slip layer 14 comprises (i) glass beads and (ii) fly ash, pearlite, zeolite, and a mixture of two or more selected from the group consisting of the present invention. It imparts high visibility and anti-slip function to the graphic film 1 according to.

Preferably, the high-visibility anti-slip layer 14 comprises one or a mixture of two or more selected from the group consisting of (i) glass beads and (ii) fly ash, pearlite, zeolite, and silver sand, 1 : 30 to 5: may be included in a weight ratio of 1.

Meanwhile, the glass beads may be included after coating their surface with a transparent silane-based compound or silicone oil, and the glass beads coated as described above are preferable in that they have improved retroreflectivity.

Further, the highly visible anti-slip layer 14 may further include calcite powder in addition to glass beads in order to further increase the visibility of road markings at day and night. Calcite is a carbonate anhydride mineral belonging to the hexagonal system. It is disposed around the glass bead particles and refracts the light reflected from the glass beads to increase the luminance on the surface of the road surface to improve visibility at night. It contributes to improving visibility by diffuse reflection. The calcite powder may be included in an amount of 20 to 60 parts by weight, based on 100 parts by weight of the glass beads, and if it is included in less than 20 parts by weight, the effect of improving visibility is not expected, and when it exceeds 60 parts by weight, the bonding strength is weakened. Cause problems

The graphic film for a road surface according to the present invention described in detail above is a highly durable first transparent coating layer that prevents damage to the image printing layer on which various texts and/or images are printed, and a high visibility anti-slip layer having improved visibility and anti-slip function The first transparent coating layer and the second transparent layer based on a mixture of an aliphatic polyaspartic ester and an aliphatic polyisocyanate, as well as improved visibility and durability, as well as an excellent anti-slip function. The coating layer prevents yellowing caused by ultraviolet rays and exhibits excellent adhesion to the road surface without using any organic solvents.

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

However, the embodiments according to the present specification may be modified in various forms, and the scope of the present specification is not construed as being limited to the embodiments described below. The embodiments of the present specification are provided to more completely describe the present specification to those of ordinary skill in the art.

<Example>

100 parts by weight of a mixture having an aliphatic polyisocyanate (polyisocyanate main part (A) and an aliphatic polyaspartic ester curing agent part (B)), 30 parts by weight of alumina powder, and 7 parts by weight of urethane beads in the content ratio shown in Table 1 below. The composition was mixed and stirred with a stirrer at 300 rpm for 1 minute to prepare a coating solution for forming the first coating layer and the second coating layer.

<Table 1>

On the first transparent coating layer formed by coating the coating solution on a polyethylene (PE) plate, an image printing layer prepared by printing an image on a transparent high-rich substrate (panorama film) using HP latex ink, and a second transparent coating layer , After completing the graphic film by sequentially forming a high-visibility anti-slip layer comprising 15 parts by weight of glass beads and 5 parts by weight of zeolite, physical properties (gel time, tag free time, tensile strength, hardness) were measured. Specifically, tensile strength was measured using a universal tensile tester, and hardness was measured using a Shore A hardness tester. Abrasion resistance was measured for a reduced weight of the coating film after abrading for a certain time. Bending resistance was observed whether cracks or the like appeared after the coating film was bent 180 degrees. Color change stability was observed whether or not a yellowing phenomenon appeared after exposure to light for a certain period of time. Pot life was measured as the time available for work.

According to the measurement results of the physical properties, the graphic film for road surfaces according to the present invention has a yellow road surface display reflective performance of the 『Traffic Road Display Installation Management Manual』 minimum reflective performance of the surface materials of the floor and wall (retroreflective performance value when drying: 150 mcd/m2ㅇlx; retroreflective performance in rainy weather: 70 mcd/m2ㅇlx), which was superior to about 250 mcd/m2ㅇlx.

In addition, the image printing layer not only produces clear graphics, but also maintains anti-skid performance (45BPN) for pedestrian safety for a long time, and has excellent durability as there is no damage by vehicles passing through the graphic film or by vehicles steering on the graphic film. Confirmed.

The above has been described based on preferred embodiments and comparative examples, but the technical idea of the present invention is not limited thereto, and it is common knowledge in the technical field to which the present invention pertains that modifications or changes can be implemented within the scope described in the claims. It will be apparent to those who have, and such modifications or changes will fall within the scope of the appended claims.

1: graphic film for road surfaces
11: first transparent coating layer
12: image printing layer
13: second transparent coating layer
14: high visibility anti-slip layer
21: transparent polymer substrate
22: image layer

Claims (7)

A first transparent coating layer;
An image printing layer formed on the first transparent coating layer;
A second transparent coating layer formed on the image printing layer; And
Includes; a highly visible non-slip layer formed on the second transparent coating layer,
The first transparent coating layer and the second transparent coating layer are based on 100 parts by weight of a mixture of aliphatic polyaspartic ester and aliphatic polyisocyanate, alumina powder, silica powder, zirconia powder, magnesium sulfate powder, 20 to 50 parts by weight of one or two or more mixtures selected from the group consisting of elvan powder, marble powder, and granite powder; Including 1 to 10 parts by weight of one or two or more mixtures selected from the group consisting of fluorinated wax, urethane beads, and acrylic beads,
The high-visibility anti-slip layer includes (i) glass beads and (ii) one or a mixture of two or more selected from the group consisting of fly ash, pearlite, zeolite, and silver sand,
The aliphatic polyaspartic ester is a graphic film for road surfaces, characterized in that it is represented by the following formula:

(In the above formula,
R ¹ and R ² are each independently an alkyl group having 1 to 10 carbon atoms,
R ³ is a branched, unbranched or cyclic aliphatic group having 1 to 20 carbon atoms,
n is 2 to 4). The method of claim 1,
The image printing layer is a graphic film for road surfaces comprising an image formed of a latex ink composition on a transparent polymer substrate. delete The method of claim 1,
The aliphatic polyisocyanate,
Hexamethylene diisocyanate (HDI), pentamethylene diisocyanate (PDI), 2,2,4-trimethyl-1,6-hexamethylene diisocyanate (2,2,4-trimethyl-1,6-hexamethylene diisocyanate), 2 ,4,4-trimethyl-1,6-hexamethylene diisocyanate (2,4,4-trimethyl-1,6-hexamethylene diisocyanate), dodecamethylene diisocyanate, 1,4-diisocyanate cyanate Cyclohexane (1,4-diisocyanatocyclohexane), isophorone diisocyanate (IPDI), 2,4'-diisocyanato-dicyclohexyl methane (2,4'-diisocyanato-dicyclohexyl methane) and 4,4'-di Socyanato-dicyclohexyl methane (4,4'-diisocyanato-dicyclohexyl methane), characterized in that selected from the group consisting of a road surface graphic film. The method of claim 1,
The aliphatic polyaspartic ester and the one or more aliphatic polyisocyanates are mixed in a weight ratio of 1:1 to 3:1. Graphic film for road surfaces. The method of claim 1,
The high visibility anti-slip layer,
(i) glass beads and (ii) fly ash, pearlite, zeolite, and a mixture of two or more selected from the group consisting of: 1: 30 to 5: 1 Graphic film for road surfaces The method of claim 6,
The high-visibility anti-slip layer, based on 100 parts by weight of glass beads, a graphic film for road surfaces further comprising 20 to 60 parts by weight of calcite powder.

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