KR102504804B1 - Method of uv-painting multi-side window profile - Google Patents

Abstract

The present application relates to a method for painting window profiles, and relates to a UV painting method for multi-sided window profiles capable of providing a coating layer with excellent weather resistance and design by forming the same UV coating layer on a plurality of surfaces.

Description

UV painting method of multi-sided window profile {METHOD OF UV-PAINTING MULTI-SIDE WINDOW PROFILE}

The present application relates to a method of painting multi-sided window profiles, and relates to a UV painting method of multi-sided window profiles having excellent weather resistance and design by forming the same UV coating layer on a plurality of surfaces.

In general, windows and doors used as building materials are installed at openings such as windows or entrances to block the interior of a building from the outside world, and are classified into aluminum windows and doors or synthetic resin windows and doors through extrusion molding.

These aluminum windows and doors have excellent durability and good incombustibility, but their manufacturing cost is high. In addition, synthetic resin windows (hereinafter referred to as PVC windows) have durability, excellent airtightness, and excellent soundproofing and waterproofing effects, but the color of the finished product is usually white, which is too monotonous. this becomes difficult In addition, synthetic resin windows have poor weather resistance, such as turning yellow when exposed to sunlight for a long time.

In addition, in order to widen the choice of consumers, technologies related to products covered by bonding films (aka wood grain) having various colors and patterns on the surface of windows and doors have been provided.

However, since the pattern film itself is not a product produced for use in windows and doors, the type of pattern film for windows and doors covered with pattern film is limited, which limits consumers' ability to select various colors, and in addition, in the manufacturing process There is a high incidence of defects in which wrinkles form on the pattern film, and it is difficult to utilize the excess pattern film remaining after attaching the pattern film to the window, which also increases the manufacturing cost of the window.

According to an embodiment of the present application, an iris profile having excellent weather resistance and design is provided through a simple facility and method, the same pattern can be applied to a plurality of surfaces, various colors and patterns can be applied, It is intended to provide a UV painting method for a window profile that can give an embossing effect.

One aspect of the present application relates to a UV painting method for multi-sided window profiles.

As an example, preparing a multi-sided window profile; A first surface painting step of forming a UV coating layer on the first surface of the window profile; and a second surface painting step of rotating the window profile by a predetermined first angle in the longitudinal direction of the window profile and forming a UV coating layer on a second surface of the window profile.

As an example, after the second surface painting step, the third surface painting of further rotating the window profile by a predetermined second angle in the longitudinal direction and forming a UV coating layer on the third surface of the window profile Include steps.

As an example, the painting step of each of the first, second and third surfaces: Applying color UV ink on each of the first, second and third surfaces of the window profile and curing with ultraviolet rays, A process of forming a color UV coating layer; and forming a protective UV paint layer by applying a protective UV ink on the color UV paint layer and curing it with ultraviolet rays.

As an example, the painting step of each of the first, second and third surfaces: Applying base ink on each of the first, second and third surfaces of the window profile and curing with ultraviolet rays, process of forming a coating layer; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form a color UV coating layer, and a process of applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer. includes

As an example, preparing the window profile includes a cleaning process.

As an example, the step of preparing the window profile includes a drying process after performing the washing process.

As an example, the step of preparing the window profile includes a pretreatment process.

As an example, preparing the window profile includes a sanding process.

As an example, the thickness of the UV coating layer is 5 nm to 90 nm.

One aspect of the present application relates to a window profile on which a UV coating layer is formed.

As an example, a window profile; and a UV coating layer formed on the window profile, wherein the UV coating layer includes a color UV coating layer; and a protective UV coating layer formed on the color UV coating layer, wherein the UV coating layer has a thickness of 5 nm to 90 nm.

As an example, the UV coating layer may include a base coating layer; a color UV coating layer formed on the base UV coating layer; and a protective UV coating layer formed on the color UV coating layer.

As an example, the window profile includes multiple surfaces, and the UV coating layer formed on each side of the window profile is the same.

According to an embodiment of the present application, the manufacturing efficiency is superior to that of the existing quenching method, and a window profile having the same pattern applied to a plurality of surfaces can be provided through a simple facility and method.

According to one embodiment of the present application, it is possible to provide a window profile having a UV coating layer having excellent weather resistance.

According to an embodiment of the present application, a window profile to which various colors and patterns are applied may be provided.

According to one embodiment of the present application, it is possible to provide a window profile to which an embossing effect is applied.

1 is a flow chart of a UV painting method of a window profile according to an embodiment of the present application.
2 is a flow chart of a UV painting method of a window profile according to an embodiment of the present application.
3 is a schematic diagram of a window profile according to an embodiment of the present application.
4 is a schematic diagram for explaining a method of rotating a window profile among UV coating methods of a window profile according to an embodiment of the present application.
5 is a schematic diagram for explaining a method of rotating a window profile among UV coating methods of a window profile according to another embodiment of the present application.
6 is a schematic diagram for explaining a method of rotating a window profile among UV coating methods of a window profile according to another embodiment of the present application.
7 is a schematic diagram for explaining a method of rotating a window profile among UV coating methods of a window profile according to another embodiment of the present application.
8 is a schematic diagram for explaining a method of forming a paint layer on the upper surface of a UV painting method of a window profile according to an embodiment of the present application.
9 is a schematic diagram for explaining a method of forming a paint layer on the upper surface of a UV painting method of a window profile according to another embodiment of the present application.
10 is a schematic diagram for explaining a method of forming a paint layer on a side surface of a UV painting method of a window profile according to an embodiment of the present application.
11 is a schematic diagram for explaining a method of forming a paint layer on a side surface of a UV painting method of a window profile according to another embodiment of the present application.
12 is a schematic diagram for explaining a method of forming a paint layer on a lower surface of a UV painting method of a window profile according to an embodiment of the present application.
13 is a schematic diagram for explaining a method of forming a paint layer on a lower surface of a UV painting method of a window profile according to another embodiment of the present application.
14 is a schematic diagram for explaining a window profile on which a UV coating layer is formed according to an embodiment of the present application.
15 is a schematic diagram for explaining a window profile on which a UV coating layer is formed according to another embodiment of the present application.
16 is a graph showing the pencil hardness at the time of occurrence of scratches caused by the pencil lead by hardness for Examples and Comparative Examples.

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. In this application, terms such as "include" or "have" are intended to designate that the features, components, etc. described in the specification exist, but one or more other features or components may not exist or be added. That doesn't mean there aren't any.

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 a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

In the present application, the term "nano" may refer to a size in a nanometer (nm) unit, for example, from 1 to 1,000 nm, but is not limited thereto. In addition, the term "nanoparticle" in this specification may mean a particle having an average particle diameter in nanometer (nm) units, for example, may mean a particle having an average particle diameter of 1 to 1,000 nm, but It is not limited.

In this application, the terms "first", "second", etc. refer to the order of the surfaces on which the window profile is painted, and therefore, for example, according to the painting order, the first surface is the upper surface, lower surface or side side can be

An embodiment of the present application can be applied to interior products, and the type of interior products is not particularly limited. For example, various interior products requiring interior decoration, such as various furniture, home appliances, glass products, and artificial marble. This may be included, and for more specific examples, it may be a window profile or a door. In addition, the window profile means a frame that forms the outline of the window, and is used as an adherend on which the UV coating layer according to the present application is formed, resulting in a colorful and luxurious three-dimensional protrusion on the surface of the profile as the visual and tactile effects are improved. Patterns can be implemented, and accordingly, colorful and luxurious interior products can be provided. Further, in the following description, a window profile is used as a reference, but this is merely a window profile selected for explanation of the present application, and the present application is not limited to the window profile.

Hereinafter, a UV painting method of a window profile, which is an embodiment of the present application, will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are illustrative, and the scope of the UV painting method of the window profile of the present application is not limited by the accompanying drawings.

1 is a flow chart of a UV painting method of a window profile according to an embodiment of the present application. As shown in FIG. 1, the UV painting method of the window profile includes the steps of preparing a multi-sided window profile (S10); A first surface painting step (S20) of forming a UV coating layer on the first surface of the window profile; and a second surface painting step (S30) of rotating the window profile by a predetermined first angle in the longitudinal direction of the window profile and forming a UV coating layer on the second surface of the window profile.

2 is a flow chart of a UV painting method of a window profile according to another embodiment of the present application. As shown in FIG. 2, in the UV painting method of the window profile, after the second side coating step (S30) of the above-described painting method, the window profile is further rotated by a predetermined second angle in the longitudinal direction, and the window profile And a third surface painting step of forming a UV coating layer on the third surface of the.

3 is a schematic diagram of a window profile according to an embodiment of the present application. As shown in FIG. 3, the window profile 1 according to an embodiment of the present application has two or more surfaces. As will be described later, it can be divided into an upper part 10, a lower part 20 and a side part 30. However, this application is not limited to these divisions or designations, and is only intended to distinguish different aspects.

4 to 7 show specific embodiments according to the rotation method described above. Fig. 4 is a schematic diagram of the first embodiment. As shown in Fig. 4, first, a paint layer is formed on the top surface, and then rotated 90 degrees to form a paint layer on the side surface. FIG. 5 is a schematic view of the second embodiment. As shown in FIG. 5, first, a paint layer is formed on the upper surface and then rotated 180 degrees to form a paint layer on the lower surface. 6 is a schematic diagram of a third embodiment. As shown in FIG. 6, after forming a paint layer on the top surface first, rotating it 90 degrees to form a paint layer on the side surface, and then moving the paint layer in the same direction. Rotate it 90 degrees to form a paint layer on the lower surface. Fig. 7 is a schematic diagram of a fourth embodiment. As shown in Fig. 7, after first forming a paint layer on the upper surface, rotating it 180 degrees, forming a paint layer on the lower surface, and then rotating the paint layer 90 degrees in the opposite direction. Also rotated to form a paint layer on the side surface.

That is, according to the predetermined sequence of the present inventor, the same UV coating layer can be laminated on both sides of the window profile.

Hereinafter, with reference to FIGS. 8 to 13, a painting method according to an embodiment of the present application will be described in detail for each step.

First, a multi-sided window profile is prepared (S10).

In this specification, the term "multifaceted" means having two or more sides or a plurality of sides.

In addition, it is preferable that the multi-faceted surface is a multi-faceted surface having a curved surface.

In addition, as the window profile of this application, any window profile that can be applied in the technical field to which this application belongs can be applied as long as it has a window profile including a plurality of surfaces, regardless of shape and size.

Then, a first surface painting step of forming a UV coating layer on the first surface of the window profile is performed (S20).

8 is a schematic view illustrating a method of forming a paint layer on the first surface of a UV painting method of a window profile according to an embodiment of the present application. According to FIG. 8, the first surface is an upper surface, but the present application is not limited thereto.

That is, a step of applying a base ink on the first surface of the window profile and curing it with ultraviolet rays to form a base paint layer; A process of applying color UV ink on the base paint layer and curing with ultraviolet rays to form a color UV paint layer, and a step of applying protective UV ink on the color UV paint layer and curing with ultraviolet rays to form a protective UV paint layer do.

Specifically, first, base ink is applied to the first surface of the window profile, that is, the upper surface, and UV is irradiated to form the base paint layer 11.

The base coating layer is an undercoat of the UV coating layer, and is a base white coating layer or a base transparent coating layer. In order to cover the color of the window profile itself, it may be formed as a base white paint layer. That is, when color painting is applied on a white window profile whose whiteness is not 100% identical, the possibility that the color may look slightly different can be eliminated. However, as will be described later, the base coating layer may be omitted in the present application.

Here, the composition of the ink used as the base ink is not particularly limited, UV ink that can be cured using UV may be used, and various inks may be applied as long as they are applicable in the technical field to which this application belongs. .

In addition, the method of applying the base ink, irradiating UV, and curing the base ink is not particularly limited, and is a method for turning the liquid UV ink into a solid state. The device for performing this is also not particularly limited, but it is preferably performed using a continuous process device that can be irradiated with UV immediately after the ink is applied. That is, ink is applied in a window profile at the ink head, and the ink applied in liquid form can be immediately cured using a UV curing lamp (eg, LED lamp) disposed close to the ink head. At this time, the irradiation time of the ultraviolet rays may be 1 second to 1 minute, but the present application is not necessarily limited thereto.

Through this, it is possible to provide a projecting pattern or an embossing effect.

In this application, "protrusion pattern" or "embossing" means a three-dimensional three-dimensional pattern that appears when the ink according to the present application is printed or coated according to a certain three-dimensional pattern pattern on a to-be-printed body, for example, on a to-be-printed body It is formed in a pattern of a specific pattern on the ink-printed or coated portion and the non-printed peripheral portion, or even within the ink-printed or coated portion to cause a height deviation to provide a visual three-dimensional effect as well as a unique touch.

Then, color UV ink is applied on the base coating layer 11 and cured by UV to form a color UV coating layer 13 .

The composition of the ink used as the color UV ink is not particularly limited, and UV inks that can be cured using UV may be used, and various inks may be applied as long as they are applicable in the technical field to which this application belongs. In particular, a combination of the basic 3 to 5 colors installed in the printing equipment can accurately implement various designs and colors required for window painting, and the design and color to be realized are transmitted to the printing equipment in the form of electrical signals.

Through this, it is possible to implement a printed pattern. In addition, a three-dimensional printed pattern may be implemented by combining the printed pattern with a protruding pattern or embossing effect due to the base UV coating layer.

In addition, a method of applying color UV ink, irradiating UV, and curing the color UV ink is not particularly limited, and is a method for converting liquid UV ink into a solid state. The device for performing this is also not particularly limited, but it is preferably performed using a continuous process device that can be irradiated with UV immediately after the ink is applied. That is, ink is applied in a window profile at the ink head, and the ink applied in liquid form can be immediately cured using a UV curing lamp (eg, LED lamp) disposed close to the ink head.

Then, the protective UV ink is applied on the surface to which the color UV ink is applied, that is, the color UV paint layer 13, and cured with UV to form the protective UV paint layer 15.

The composition of the ink used as the protective UV ink is not particularly limited, and UV inks that can be cured using UV may be used, and various inks may be applied as long as they are applicable in the technical field to which this application belongs. In particular, it is sufficiently cured even in a short curing time, and has high surface strength, providing a protective effect to the paint layer of the window profile so that the surface is not damaged even from external micro scratches and scratches. That is, through this, the printed pattern can be protected and a matte appearance can be provided.

In addition, a method of applying UV ink for protection, irradiating UV, and curing the UV ink for protection is not particularly limited, and is a method for converting UV ink in a liquid state into a solid state. The device for performing this is also not particularly limited, but it is preferably performed using a continuous process device that can be irradiated with UV immediately after the ink is applied. That is, ink is applied in a window profile at the ink head, and the ink applied in liquid form can be immediately cured using a UV curing lamp (eg, LED lamp) disposed close to the ink head.

The process of applying or printing each UV ink to each adherend or adherend surface is not particularly limited, but can be formed using a flow coater, spray, silk screen method, etc. It is also possible, and it is preferable to use a method of painting and printing UV ink using a UV inkjet printer.

After each ink or paint is applied or printed, UV is irradiated and cured to form a coating layer.

9 is a schematic diagram for explaining a method of forming a coating layer on the first surface of a UV painting method of a window profile according to another embodiment of the present application. Here, the first surface is an upper surface, but the present application is not limited thereto.

As shown in FIG. 9, in the first surface painting step, color UV ink is applied on the upper surface of the window profile and cured with ultraviolet rays to form a color UV paint layer, and protective UV ink is applied on the color UV paint layer. It includes a step of applying and curing with ultraviolet rays to form a protective UV coating layer.

That is, in this embodiment, a process of forming a color UV coating layer and a protective UV coating layer excluding the base coating layer is included. A common description for each can be applied to the above description.

Then, the window profile is rotated by a predetermined angle in the longitudinal direction of the window profile, and a second surface painting step of forming a UV coating layer on the second surface of the window profile is performed (S30).

As shown in FIGS. 4 to 7 , the window profile is rotated by a predetermined first angle around the longitudinal direction of the window profile.

Here, the "predetermined" angle means a preset angle according to the intent of the present application. For example, the first angle may be 70 degrees (°) to 110 degrees, 75 to 105 degrees, 80 degrees to 100 degrees, 85 degrees to 95 degrees, and preferably 90 degrees. Additionally, the first angle may be 160 degrees to 200 degrees, 165 degrees to 195 degrees, 170 degrees to 190 degrees, 175 degrees to 185 degrees, and preferably 180 degrees. However, even if they are referred to as 90 degrees and 180 degrees, some errors may be included if they can represent what the present application intends.

As shown in FIGS. 4 and 6, the window profile on which the paint layer of the first surface is formed is rotated by 90 degrees in the longitudinal direction of the window profile. That is, through this position, it is possible to easily position the paint formation on the second surface. In addition, as shown in FIGS. 5 and 7, in another embodiment, the window profile on which the paint layer of the first surface is formed is rotated by 180 degrees in the longitudinal direction of the window profile. That is, through this position, it is possible to easily position the paint formation of the lower surface as the second surface.

10 and 11 are schematic diagrams for explaining a method of forming a paint layer on a side surface of a UV painting method of a window profile according to an embodiment of the present application. 12 and 13 are schematic diagrams for explaining a method of forming a paint layer on a lower surface of a UV painting method of a window profile according to an embodiment of the present application. Here, in order to explain the paint layer of each surface, the paint layer formed in the previous process is not specifically shown.

As for the order of painting, you can paint the side face or the bottom face second. Here, the second surface painting step is a process of forming base paint layers 21 and 31 by applying base ink on the second surface of the window profile and curing it with ultraviolet rays; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form color UV coating layers 23 and 33, and applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer (23, 33).

In addition, in another embodiment, the color UV paint layer may be directly formed on the second surface without forming the base paint layer in the same manner as in the first surface painting step.

Among the descriptions of the painting on the first surface, all descriptions that can be applied to the second surface apply to the second surface, and the description thereof is omitted.

Then, the window profile is further rotated by a predetermined second angle around this direction, and a third surface painting step of forming a UV coating layer on the third surface of the window profile is performed (S40).

As shown in FIGS. 5 and 7, the window profile is further rotated by a predetermined second angle around the longitudinal direction of the window profile.

The second angle may be 70 degrees to 110 degrees, 75 to 105 degrees, 80 degrees to 100 degrees, 85 degrees to 95 degrees, and preferably 90 degrees. However, even if it is referred to as 90 degrees, it may include some errors if it can represent what the present application intends.

That is, as shown in FIG. 5 , it may rotate by a second angle in the same rotation direction as the first rotation. The window profile on which the top and side surfaces are coated is rotated 90 degrees around the longitudinal direction of the window profile. That is, through this position, it is possible to easily position the paint formation on the lower surface.

Also, as shown in FIG. 7 , in another embodiment, it may be rotated by a second angle in a direction opposite to the first rotation. The window profile on which the paint layers of the upper and lower surfaces are formed is rotated 90 degrees in the opposite direction to the longitudinal direction of the window profile. That is, through this position, it is possible to easily position the paint formation on the side surface.

In addition, in the order of the painted surface, the side surface or the lower surface may be painted third. Here, the third surface painting step is a process of forming base paint layers 21 and 31 by applying base ink on the third surface of the window profile and curing it with ultraviolet rays; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form color UV coating layers 23 and 33, and applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer (25, 35).

Also, in another embodiment, a color UV paint layer may be directly formed on the third surface without forming a base paint layer in the same manner as in the first surface painting step.

Among the descriptions of the painting on the first surface, all descriptions that can be applied to the third surface apply to the third surface, and the description thereof is omitted.

Through this, it is possible to provide the same coating layer on two or three surfaces. Additionally, it is possible to provide the same raised pattern or embossing effect on two or three sides.

In addition, preparing the window profile may include a cleaning process. As a process to remove the pollutant caused by dust mixing, for example, it is a process to remove the pollutant by using a water washing or air blowing process.

Also, preparing the window profile may include a drying process. This is a process of drying the window profiles provided through the above-described washing process, and water is removed through a method such as hot air drying, and hot air drying is to pass the window profiles through a chamber in which hot air is circulated. Through this, it is possible to easily form a UV coating layer on the window profile through the painting process, which is a subsequent process, when the water is removed.

In addition, the step of preparing the window profile may include a pretreatment process. A pretreatment process for improving adhesion or adhesion between the UV coating layer and the window profile is preferable. For example, there is a corona treatment or primer treatment process. A specific method or using device is not particularly limited, and may be a method or using device that can be applied as a pretreatment process of a painting process.

As another example, this process may be an antistatic process.

In addition, preparing the window profile may include a sanding process.

The sanding process is a preliminary preparation process for printing/coating UV paint with desired adhesion on a window profile having a smooth surface and for the coated paint to adhere well without peeling off. , A micro-embossed form is created, through which the adhesion area is increased, and the adhesion of the ink can be greatly improved.

The roughness for securing the adhesion intended by the present application is 200P to 400P, preferably 300P (roughness unit) at the level of sandpaper/abrasive sand, and the rotary abrasive sand is 200 to 400 rpm, preferably 300 It is preferable to apply about 2 to 3 times at a speed of rpm.

Through this sanding process, compared to a product whose surface has been roughened, the printed/coated surface of the final product is not easily peeled off compared to a product that has not undergone the sanding process.

This shows a significantly improved print pattern retention capability not only in the lab for samples that have actually been printed/coated, but also when virtual transportation and handling are simulated.

In addition, another embodiment of the present application provides a window profile on which a UV coating layer is formed.

As an embodiment, the window profile includes two or more surfaces, and as shown in FIG. 14, the window profile 10; and a UV coating layer 13 formed on the window profile, wherein the UV coating layer includes a color UV coating layer 13; and a protective UV coating layer 15 formed on the color UV coating layer 13. The thickness of the total UV coating layer is 5 nm to 90 nm, preferably 10 nm to 40 nm.

As another embodiment, as shown in Figure 15, the window profile (10); and a UV paint layer 13 formed on the window profile, wherein the UV paint layer includes a base paint layer 11; a color UV coating layer 13 formed on the base UV coating layer 11; and a protective UV coating layer 15 formed on the color UV coating layer 13, and the total thickness of the UV coating layer is 5 nm to 90 nm, preferably 15 nm to 60 nm.

In addition, each of the base coating layer, the color UV coating layer, and the protective UV coating layer may have a thickness of 5 nm to 20 nm.

The base UV coating layer is formed on a partial area of the window profile to show a projecting pattern or embossing effect, and through this, a 3D pattern effect can be provided. In addition, an effect of concealing the background color of the window profile, for example, white, is provided.

The color UV coating layer laminated to cover the base UV coating layer may implement a printed pattern.

In addition, the protective UV coating layer laminated on the color UV coating layer serves to protect the printed pattern below, and can also provide a matte appearance.

That is, the protrusion pattern is included by the base UV coating layer, and the protrusion pattern can be maintained through the color UV coating layer and the protective UV coating layer.

Through this, the first and second surfaces of the window profile, that is, the upper and lower surfaces, the upper and side surfaces, and the side and lower surfaces may have the same UV coating layer.

In addition, the top surface, the side surface, and the bottom surface may all have the same UV coating layer.

Among the descriptions of the window profile on which the UV coating layer is formed, all of the contents described in the above-described coating method may be applied, and thus, a detailed description thereof is omitted here.

The base UV coating layer is formed in a partial area of the window profile in order to give a protruding pattern or an embossing effect, and through this, a 3D pattern effect can be provided. In addition, an effect of concealing the background color of the window profile, for example, white, is provided.

The color UV coating layer laminated to cover the base UV coating layer may implement a printed pattern.

In addition, the protective UV coating layer laminated on the color UV coating layer serves to protect the printed pattern below, and can also provide a matte appearance.

That is, the protrusion pattern is included by the base UV coating layer, and the protrusion pattern can be maintained through the color UV coating layer and the protective UV coating layer.

By providing a coating layer having such a thickness, it is possible to provide excellent weather resistance by preventing a portion of the coating layer from being removed or peeled off from an external impact.

[ Experimental Example ]

In order to confirm the effect of the sanding process, after preparing the profile, performing the sanding process, UV paint was applied, and then cured by irradiation with ultraviolet rays to prepare a sample of Example 1 (scratch improvement UV printing). In addition, a white profile and a wrapping profile were prepared as samples of Comparative Examples 1 and 2, respectively. In addition, a sample of Comparative Example 3 (existing UV printing) was prepared by applying UV paint without a sanding process and then curing by irradiating ultraviolet rays.

Assuming that the higher the print adhesion, the better the scratch resistance (eg, ink or paint does not come off even when scratched), and a test for scratch resistance was performed. The test is a pencil hardness test method. For example, 3H, 2H, H and HB represent the hardness of the pencil lead that starts to scratch.

The moving speed of the specimen stand was 15 cm/min, the weight (pencil weight) was 800 g, and the type of pencil was Mitsubishi's graphite lead. It is expressed as the pencil hardness at the time of occurrence of scratches caused by the pencil lead for each hardness, and is shown in FIG.

As shown in FIG. 16, Example 1 exhibited high hardness compared to Comparative Examples 1 to 3. Through this, it was confirmed that Example 1 had excellent scratch resistance and excellent print adhesion.

Although the above has been described with reference to the preferred embodiments of the present application, those skilled in the art can variously modify and change the present application within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

1: window profile
10: upper side of window profile
20: lower face of window profile
30: side face of window profile
11, 21, 31: base paint layer
13, 23, 33: color UV coating layer
15, 25, 35: UV coating layer for protection

Claims (16)

Preparing a multi-sided window profile including a sanding process to create a micro-embossed shape on the surface of the multi-sided window profile;
A first surface painting step of forming a UV coating layer on the first surface of the window profile; and
A second surface painting step of rotating the window profile by 70 to 110 degrees in the longitudinal direction of the window profile and forming a UV coating layer on a second surface of the window profile,
The first surface painting step may include a process of applying color UV ink on the first surface of the window profile and curing it with ultraviolet rays to form a color UV paint layer; And a step of applying a protective UV ink on the color UV paint layer and curing it with ultraviolet rays to form a protective UV paint layer,
The second surface painting step may include a process of applying color UV ink on the second surface of the window profile and curing it with ultraviolet rays to form a color UV paint layer; And a step of applying a protective UV ink on the color UV paint layer and curing it with ultraviolet rays to form a protective UV paint layer,
The process of applying color UV ink and curing with ultraviolet rays to form a color UV coating layer is performed by using a continuous process device so that UV is irradiated immediately after the ink is applied, so that the ink is applied to the window profile from the ink head, and the ink A UV painting method for multi-sided window profiles that instantly cures liquid ink by using a UV curing lamp placed close to the head. According to claim 1,
After the second surface painting step,
A method of UV painting a multi-sided window profile comprising a third surface painting step of further rotating the window profile by a predetermined second angle around the longitudinal direction and forming a UV coating layer on a third surface of the window profile. delete According to claim 1,
The first surface painting step: Before the process of applying color UV ink on the first surface of the window profile and curing with ultraviolet rays to form a color UV paint layer,
forming a base paint layer by applying a base ink on the first surface of the window profile and curing it with ultraviolet rays; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form a color UV coating layer, and a process of applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer. UV painting method of a multi-sided window profile comprising a. delete According to claim 1,
The second surface painting step: Before the process of applying color UV ink on the second surface of the window profile and curing with ultraviolet rays to form a color UV paint layer,
forming a base paint layer by applying a base ink on the second surface of the window profile and curing it with ultraviolet rays; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form a color UV coating layer, and a process of applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer. UV painting method of a multi-sided window profile comprising a. According to claim 2,
The third surface painting step is:
forming a color UV coating layer by applying color UV ink on the third surface of the window profile and curing it with ultraviolet rays; and forming a protective UV paint layer by applying a protective UV ink on the color UV paint layer and curing it with ultraviolet rays. According to claim 2,
The third surface painting step is:
forming a base paint layer by applying a base ink on the third surface of the window profile and curing it with ultraviolet rays; A process of applying color UV ink on the base coating layer and curing with ultraviolet rays to form a color UV coating layer, and a process of applying a protective UV ink on the color UV coating layer and curing with ultraviolet rays to form a protective UV coating layer. UV painting method of a multi-sided window profile comprising a. According to claim 1,
The step of preparing the window profile is a UV painting method of a multi-sided window profile including a washing process. According to claim 9,
The step of preparing the window profile comprises a drying process after performing the washing process, UV painting method of the multi-sided window profile. According to claim 1,
The step of preparing the window profile is a UV painting method of a multi-sided window profile including a pretreatment process. According to claim 1,
The step of preparing the window profile is a UV painting method of a multi-sided window profile comprising a sanding process. According to claim 1,
The UV coating method of the window profile having a thickness of the UV coating layer of 5 nm to 90 nm. A window profile painted by the UV painting method of the multi-sided window profile of claim 1,
window profile; And a UV coating layer formed on the window profile,
The UV coating layer may include a color UV coating layer; And a protective UV coating layer formed on the color UV coating layer,
The color UV coating layer includes a printed pattern,
A window profile having a UV coating layer having a thickness of 5 nm to 90 nm. 15. The method of claim 14,
The UV coating layer may include a base coating layer; a color UV coating layer formed on the base UV coating layer; and a UV coating layer for protection formed on the color UV coating layer. The method of claim 14 or 15,
The window profile includes multiple faces,
A window profile having a UV coating layer having the same UV coating layer formed on each surface of the window profile.

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