KR20220025512A - Uv curable coating composition for magnetic pattern, methof gor printing magnetic pattern of gravure line using the same and interior film produced therefrom - Google Patents

Abstract

The present invention relates to a UV-curable coating composition for a magnetic pattern, a method for printing a magnetic pattern of a gravure line by using the same, and an interior film manufactured therefrom. The present invention provides the UV-curable coating composition for the magnetic pattern suitable for a gravure line, and provides a method for printing a magnetic pattern of a gravure line, including: forming a coating layer by printing a UV-curable coating composition for a magnetic pattern on at least one surface of a gravure printing substrate; forming a pattern in a magnetic jig on the coating layer obtained through the printing; and curing a pattern layer that is formed. Accordingly, interior films having excellent surface performance, various patterns, and desired shapes are able to be mass-produced, so that the interior films are provided to more consumers.

Description

UV curing coating composition for magnetic pattern, method of printing magnetic pattern of gravure line using same, and interior film manufactured therefrom

The present invention relates to a UV-curable coating composition for a magnetic pattern, a method for printing a magnetic pattern for a gravure line using the same, and an interior film prepared therefrom, and more specifically, to provide a UV-curable coating composition for a magnetic pattern suitable for a gravure line, By providing a magnetic pattern printing method in one process in a gravure line, an ultraviolet curing coating composition for magnetic patterns that has excellent surface performance and enables mass production of various patterns and desired shapes of interior films, magnetic force of a gravure line using the same It relates to a pattern printing method and an interior film manufactured therefrom.

Pattern forming technology using magnetic ink has been utilized in various fields such as ink, paint, and coating agent fields.

By using the distribution of magnetic particles contained in magnetic ink at different densities according to the strength of magnetic force, various and unique design patterns can be realized, and magnetic ink can be printed on various interior products to realize a beautiful appearance. For example, when applied to building materials used in spaces that require interior decoration, such as shops, public institutions, apartments, or houses, the added value of materials can be improved by realizing a beautiful appearance, and in addition to this, materials for vehicles and wallpaper Ink can be printed to form a beautiful appearance for , electronic products, etc.

As such, in the case of interior products to which a specific decorative pattern printing ink is applied, interest in ease of use and fashionableness increases with the increase in income level, and consumers who want to form more sophisticated and aesthetic patterns in residential and commercial spaces The demand for is also growing.

Patent Document 1 discloses a method of printing a pattern on the surface of an object by printing (coating), but in this conventional method, the printing process is complicated, the selection of materials is limited, and the durability of the printed covering is poor. There is a problem of discoloration or discoloration. Therefore, these methods have a problem in that expensive printing costs are required, so there is a limit to practical use.

In addition, only the monotonous print pattern of the same pattern was mainly implemented, thereby lowering the quality of printing, and there is a difficulty in mass production.

In order to solve this problem, Patent Document 2 includes an ink composition capable of forming various patterns showing a three-dimensional effect by containing a magnetic reactant, and an interior film having various and sophisticated appearances showing a three-dimensional effect when a magnetic force is applied. is starting

4 is a process schematic diagram showing a printing method using the ink composition, and by passing the substrate 3 between the pressure roll 210 and the printing roll 220 and drying while passing the drying oven 240, the surface is three-dimensional. Manufactures patterned interior products. At this time, the ink composition contained in the cylindrical printing roll 220 is discharged through the screen network to print the ink composition on the surface of the substrate 3, and the ink composition is printed on the substrate 3 It is designed to pass through the magnet roll 230 by moving it, and to apply a magnetic field to the magnet roll 230 using a magnet provided according to a predetermined pattern.

However, Patent Document 2 also remains a difficult problem for mass production in this way because many jigs are required for mass production due to single product production by a certain jig.

Therefore, in the conventional interior film production, it is true that it is difficult to form a pattern in a continuous process through the gravure printing method.

Japanese Patent No. 52-41682 (published on June 21, 1972) Republic of Korea Patent No. 1302230 (2013.09.02 Announcement)

Accordingly, as a result of the present inventors' efforts to solve the problems of the prior art, the present inventors provide a UV curing coating composition for a magnetic pattern suitable for a gravure line, and the film capable of gravure printing or coating through the magnetic pattern printing method of the gravure line using the same is irrespective of the type The present invention has been completed by confirming the production of interior films with excellent surface performance, which can be mass-produced and provided to more consumers.

An object of the present invention is to provide an ultraviolet curing coating composition for magnetic patterns.

Another object of the present invention is to provide a method of printing a magnetic pattern of a gravure line using an ultraviolet curing coating composition for a magnetic pattern suitable for the gravure line.

Another object of the present invention is to provide an interior film prepared therefrom.

In order to achieve the above object, the present invention is an oligomer for ultraviolet curing 20 to 30% by weight, monomer 15 to 35% by weight, photopolymerization initiator 5 to 15% by weight, magnetic material 5 to 25% by weight and the remaining amount of solvent for magnetic patterns An ultraviolet curing coating composition is provided.

The ultraviolet curing coating composition for magnetic patterns of the present invention preferably has a viscosity of 200 cps or less and a degree of curing H or more.

In the UV curing coating composition for magnetic patterns of the present invention, the UV curing oligomer is any one selected from the group consisting of acrylic acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, silicone acrylate and modified acrylate is to use

The monomers are single or mixed types selected from monofunctional monomers or polyfunctional monomers.

In the ultraviolet curing coating composition for a magnetic pattern of the present invention, the magnetic material is a mixed magnetic material of two or more selected from the group consisting of a magnetic-containing ferromagnetic material, a weak magnetic material, a soft magnetic material, and a non-metal magnetic material.

More preferably, the magnetic material is a flake having a ferromagnetic material containing iron, cobalt, nickel, cerium and neodiium, a flake coated with the ferromagnetic material, a diamagnetic flake containing copper and zinc, silica or coated with an organic/inorganic colorant Two or more types selected from flakes are used. In this case, the magnetic material preferably has an average particle diameter of 2 to 200 μm.

In addition, in the present invention, as a photoinitiator, one or more of an Acylphosphineoxide initiator or a Hydroxy Alkylphenone series is included.

In addition, the present invention is a step of forming a coating layer by printing an ultraviolet curing coating composition for a magnetic pattern on at least one surface of a substrate for gravure printing that generates a magnetic force, a step of forming a pattern in a magnetic force jig on the printed coating layer, a step of curing the formed pattern layer To provide a method for printing a magnetic pattern of a gravure line, in which all steps are performed in one process in a gravure printing line.

The substrate for gravure printing is to use any one selected from the group consisting of PP (polypropylene), PVC (polyvinyl chloride), PET (polyethylene terephthalate), PC (polycarbonate) and paper.

In addition, the magnetic jig has a magnetic roll suitable for the flow of the gravure printing line, and an ultraviolet curing machine is disposed on the magnetic roll.

The magnetic force jig is in the form of a rubber roll, a magnetic field pattern is inserted into the rubber roll, and the strength of the magnetic field applied to the pattern is 300 to 1000G (Gauss).

The UV curing device is any one selected from mercury, metal, and LED lamps and is irradiated with an amount of 30 to 200 mj of light.

Furthermore, the present invention provides an interior film having excellent surface performance prepared by a method of printing a magnetic pattern of a gravure line using an ultraviolet curing coating composition for a magnetic pattern.

According to the present invention, it is possible to provide a UV-curable coating composition for a magnetic pattern having a low light-intensity UV curing and rapid magnetic force formation.

Therefore, the film capable of gravure printing or coating using the ultraviolet curing coating composition for magnetic patterns according to the present invention can be mass-produced regardless of the type, and can be provided to more consumers.

In addition, from the magnetic pattern printing method of the gravure line using the ultraviolet curing coating composition for magnetic patterns according to the present invention, consumers who want a product with a unique and unique design that is difficult to find in ready-made products, or a manufacturer who wants a product with a design differentiated from other companies It is possible to continuously mass-produce interior films that satisfy

Furthermore, by using the magnetic pattern printing method of the gravure line of the present invention, it can be applied to inks, paints, and coatings using a pattern forming technique utilizing a magnetic pattern.

1 is a schematic flowchart of a method for printing a magnetic pattern of a gravure line of the present invention;
Figure 2 shows a magnetic force pattern wound by a magnet roll in the magnetic force pattern printing method of the gravure line of the present invention,
3 is an actual product photograph of a patterned interior film manufactured by a method of printing a magnetic pattern of a gravure line using the ultraviolet curing coating composition of the present invention.
4 is a process schematic diagram showing a printing method using a conventional ink composition.

Hereinafter, the present invention will be described in detail.

The present invention provides a UV curing coating composition for a magnetic pattern comprising 20 to 30% by weight of an oligomer for UV curing, 15 to 35% by weight of a monomer, 5 to 15% by weight of a photopolymerization initiator, 5 to 25% by weight of a magnetic material, and the remaining amount of a solvent do.

The present invention is to develop a coating composition suitable for a gravure printing line, and to provide a UV curing coating composition with low light intensity UV curing and fast magnetic force formation suitable for the gravure line speed.

Hereinafter, the characteristics of each composition of the composition of the present invention will be described in detail.

In the UV curing coating composition for magnetic patterns of the present invention, the UV curing oligomer is at least one selected from the group consisting of acrylic acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, silicone acrylate and modified acrylate. , and synthetic or commercial products can be used, and as an example, PN-3601, PN-3330, and PN-8100 are used in the embodiment. Preferably, as the urethane acrylate-based oligomer, PN-3601 having a reactive group of 6 is used.

It is preferable that the UV curing oligomer contains 20 to 30 wt% of the UV curing oligomer relative to the total composition. In this case, if it is less than 20 wt%, the sharpness of the pattern shape is deteriorated, and if it exceeds 30 wt%, the pattern is formed by increasing the viscosity. this gets harder

In the ultraviolet curing coating composition for a magnetic pattern of the present invention, when the monomer contains 15 to 35% by weight alone or in a mixture selected from monofunctional monomers or polyfunctional monomers, the most excellent effect is realized. In this case, if it is less than 15% by weight, it is disadvantageous for pattern formation, and if it exceeds 35% by weight, it is not preferable for pattern formation due to magnetic pigment fluidity.

In an embodiment of the present invention, commercial products of 2-HPA, HDDA, and DPHA are used as the monomer.

In the ultraviolet curing coating composition for a magnetic pattern of the present invention, the photoinitiator may be used in an amount of 5 to 15% by weight based on the total amount of the photoinitiator in order to cure the coating film after coating. Preferably, it includes at least one type of acylphosphineoxide initiator or hydroxyalkylphenone series, and in the embodiment, a commercial product of PI-184 or RECURE-2100 is used as an initiator.

The content of the photoinitiator is up to 15% by weight, and an appropriate amount is selected according to the amount of light to reduce curl or shrinkage.

The pattern formation is affected by the above oligomer-specific performance, initiator ratio, and monomer ratio.

At this time, since the lower the viscosity, the more advantageous the pattern formation. In order to meet these requirements, the ultraviolet curing coating composition for magnetic patterns of the present invention preferably has a viscosity of 200 cps or less and a curing degree (hardness) of H or more.

In particular, when the viscosity is 200 cps or less, magnetic force formation is easily achieved, but in order for pattern formation to be constant, it must meet a viscosity range that is not too low so as not to cause dripping on the mesh roll. Therefore, it is suitable for the ultraviolet curing coating composition for a magnetic pattern to have a viscosity of 200 cps or less, more preferably 50 to 150 cps, and a magnetic content of 25% or less.

The magnetic material used in the ultraviolet curing coating composition for a magnetic pattern of the present invention forms a pattern with two or more mixed types of magnetic materials selected from the group consisting of a magnetic-containing ferromagnetic material, a weak magnetic material, a soft magnetic material and a non-metal magnetic material, and the pattern is formed. It is characterized by this color.

More preferably, the magnetic material is a flake having a ferromagnetic material containing iron, cobalt, nickel, cerium and neodiium, a flake coated with the ferromagnetic material, a diamagnetic flake containing copper and zinc, silica or coated with an organic/inorganic colorant Two or more types selected from flakes are used. It is preferable to contain 5 to 25% by weight of the magnetic material relative to the total composition.

In addition, the magnetic material preferably has an average particle diameter of 2 to 200 μm, and more preferably, an average particle diameter of 2 to 80 μm. At this time, if the average particle diameter of the magnetic material is less than 2㎛, the implementation of a three-dimensional pattern is insufficient, and if it exceeds 200㎛, the effect is not great compared to the high content, and there is a problem in miscibility between the entire composition.

The present invention is 1) at least one surface of the substrate for gravure printing, a UV curing coating composition for a magnetic pattern is printed to form a coating layer, 2) a pattern forming step in a magnetic jig on the printed coating layer, 3) the formed pattern layer is cured Provided is a method of printing a magnetic pattern of a gravure line, which consists of steps, in which all steps are performed in one process in a gravure printing line.

1 shows a schematic flowchart of a method of printing a magnetic pattern of a gravure line.

When the magnetic pattern printing method of the gravure line of the present invention is specifically described with reference to FIG. 1 , first, the method of the present invention passes the substrate S1 between the gravure mesh roll A1 and the pressure roll A2, and this process The magnetic force liquid (S2) supported in the magnetic force coating liquid (B1) on the substrate is printed and wound by the magnet roll (A3) while passing through the pattern forming section (S3), and the magnet roll (A3) and the guide roll ( A4) is cured by the UV curing machine (C) disposed between the interior product having a finished surface (S4) is manufactured.

The substrate used for magnetic force formation in step 1) of the magnetic force pattern printing method of the gravure line of the present invention may include all substrates that can be printed on the gravure line. As an example, the substrate for gravure printing is PP (polypropylene), Any one selected from the group consisting of PVC (polyvinyl chloride), PET (polyethylene terephthalate), PC (polycarbonate) and paper can be used. , the shape can be applied. In this case, the thickness of the substrate is 0.03 mm to 0.5 mm. If it is less than 0.03 mm in the above, it is not possible to work on the Gbavia line, and if it exceeds 0.5 mm, it is also impossible to do the line work.

The UV curing coating composition for magnetic patterns is the same as the composition of the oligomer, monomer, photoinitiator, and magnetic material described above. In this case, the composition viscosity is 200 cps or less, more preferably 50 to 150 cps, and the magnetic content is suitable within 25%. In addition, the higher the content of the magnetic material, the clearer the pattern formation.

In step 2) of the magnetic pattern printing method of the gravure line of the present invention, a magnetic roll suitable for the flow of the gravure printing line and an ultraviolet curing machine are disposed on the magnetic roll.

Specifically, in the magnetic pattern printing method of the gravure line of the present invention, the substrate (S1) is passed between the gravure mesh roll (A1) and the pressure roll (A2), and in this process, the substrate is supported in the magnetic force coating solution (B1) and the mesh is coated. The magnetic liquid (S2) is printed and passed through the pattern forming section (S3) while being wound by the magnet roll (A3) and cured by the UV curing machine (C) disposed between the magnet roll (A3) and the guide roll (A4) to manufacture an interior product having a pattern-completed surface S4.

2 shows a magnetic force pattern wound by the magnet roll A3).

As shown in Figure 2, the magnetic jig is in the form of a rubber roll, a magnetic field pattern is inserted into the rubber, and the strength of the magnetic field applied to the pattern is not particularly limited, but preferably 300 Gauss (G) to 1000 Gauss (G) ) can be If the strength of the magnetic field is less than 300G, it may be difficult to form various patterns of patterns, and if it exceeds 1000G, the strength of the magnetic field is too strong and there is a risk of shape deformation.

At this time, the difference in pattern formation appears according to the distance between the UV curing machine (C) and the substrate (S1) and the distance from the pattern forming section (S3).

That is, as the distance between the UV curing machine (C) and the pattern forming section (S3) increases, the pattern blurs occurs, and as the distance between the UV curing machine (C) and the substrate (S1) increases, the pattern becomes blurred. Therefore, the distance between the UV curing machine (C) and the pattern forming section (S3) is within 100 mm, and the distance between the UV curing machine (C) and the substrate (S1) is most preferably within 50 mm.

In addition, according to the viscosity of the ultraviolet curing coating composition for magnetic patterns and the distance from the gravure mesh roll (A1) to the magnet roll (A3), the pattern is blurred.

Therefore, the viscosity of the ultraviolet curing coating composition for magnetic patterns is 200 cps or less, more preferably 50 to 150 cps, the gravure mesh roll (A1) is 100 to 150 mesh, and the magnet roll (A3) interval in the gravure mesh roll (A1) is preferably within 1M.

In the magnetic pattern printing method of the gravure line of the present invention, step 3) is a step in which the formed pattern layer is cured. The UV curing device is any one selected from metal or LED lamps and is irradiated with 30 to 200 mj of light and then cured. do.

At this time, in the present invention, the magnetic pattern printing method of the gravure line using the ultraviolet curing coating composition for magnetic patterns has a fast magnetic force formation with 1 to 2 seconds of fixing time after forming the magnetic pattern in the pattern formation.

Furthermore, the present invention provides an interior having a surface performance of at least H, scratch resistance of 150 g (tungsten pin test) or more, and solvent resistance (MEK rubbing) of 20 times or more from a method of printing a magnetic pattern of a gravure line using an ultraviolet curing coating composition for a magnetic pattern. film is provided.

3 provides an actual product photograph of a patterned interior film manufactured by a method of printing a magnetic pattern of a gravure line using the ultraviolet curing coating composition for a magnetic pattern of the present invention.

The interior film of the present invention is not only a magnetic pattern, but also a magnetic pattern of two or more mixed types of magnetic materials selected from the group consisting of a ferromagnetic material, a weak magnetic material, a soft magnetic material, and a non-metal magnetic material. color can be realized.

Hereinafter, the present invention will be described in more detail through examples.

These examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

<Example 1>

According to the composition and content disclosed in Table 1 below, an ultraviolet curing coating composition for a magnetic pattern was prepared, and the magnetic pattern printing method of the gravure line was performed using this, and the physical properties were evaluated. Table 1 relates to the preparation and physical property evaluation of the ultraviolet curing coating composition for magnetic patterns.

From Table 1, it was confirmed that the performance of each oligomer, the initiator ratio, and the result of affecting the pattern formation according to the monomer ratio were confirmed. That is, the lower the viscosity, the more advantageous the pattern formation. The higher the amount of light, the higher the surface performance, but the film deformed due to high temperature, and the coating solution was smeared on the guide roll A4 when it was not cured.

<Example 1>

The magnetic pattern printing method of the gravure line was performed using the ultraviolet curing coating composition for magnetic patterns prepared according to the composition and content disclosed in Table 2 below to evaluate the physical properties. Table 2 relates to the preparation and physical property evaluation of the ultraviolet curing coating composition for magnetic patterns.

From the results of Table 2, when the degree of curing is increased, pattern formation can be achieved at a short wavelength at a low temperature. The higher the magnetic pigment content, the clearer the pattern formation. When it is low, the mesh roll is dripped and the pattern formation is not uniform.

In the above, the present invention has been described in detail only with respect to the described embodiments, but it is obvious to those skilled in the art that various changes and modifications are possible within the scope of the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

A1: gravure mesh roll
A2: Press Roll
A3: Magnet Roll
A4: guide roll
B1: magnetic coating solution
C: UV curing machine
S1: Write
S2: Mesh-coated magnetic fluid
S3: pattern forming section
S4: Pattern finished surface
3: description
210: pressure roll
220 print rolls
240 drying oven

Claims (15)

An ultraviolet curing coating composition for magnetic patterns comprising 20 to 30% by weight of an oligomer for UV curing, 15 to 35% by weight of a monomer, 5 to 15% by weight of a photopolymerization initiator, 5 to 25% by weight of a magnetic material, and the remaining amount of a solvent. The UV-curable coating composition according to claim 1, wherein the UV-curable coating composition for magnetic patterns has a viscosity of 200 cps or less. [Claim 2] The UV-curable coating composition for magnetic patterns according to claim 1, wherein the UV-curable coating composition for magnetic patterns has a degree of curing (hardness) of H or more. The UV curing coating composition for magnetic patterns according to claim 1, wherein the magnetic material is a mixed magnetic material of two or more selected from the group consisting of a ferromagnetic material containing magnetism, a weak magnetic material, a soft magnetic material, and a non-metal magnetic material. The method according to claim 1, wherein the magnetic material is a flake having a ferromagnetic material including iron, cobalt, nickel, cerium and neodiium, a flake coated with the ferromagnetic material, a diamagnetic flake including copper and zinc, silica or an organic/inorganic colorant. An ultraviolet curing coating composition for magnetic patterns, characterized in that two or more selected from the coated flakes are used. The UV curing coating composition for magnetic patterns according to claim 1, wherein the magnetic material has an average particle diameter of 2 to 200 μm. According to claim 1, wherein the photoinitiator is an acylphosphine oxide (Acylphosphineoxide) initiator or hydroxy alkylphenone (Hydroxy Alkylphenone) series UV curing coating composition, characterized in that it comprises at least one type. On at least one side of the substrate for gravure printing,
The UV curing coating composition for magnetic pattern of claim 1 is printed to form a coating layer,
A pattern forming step in a magnetic jig on the printed coating layer,
A method for printing a magnetic pattern of a gravure line, comprising the step of curing the formed pattern layer, wherein the previous step was performed in one process in a gravure printing line. The method according to claim 8, wherein the substrate for gravure printing is any one selected from the group consisting of PP (polypropylene), PVC (polyvinyl chloride), PET (polyethylene terephthalate), PC (polycarbonate) and paper. Magnetic pattern printing method of gravure line. [10] The method of claim 9, wherein the magnetic force jig includes a magnetic roll suitable for the flow of the gravure printing line, and an ultraviolet curing machine is disposed on the magnetic roll. The method of claim 9, wherein the magnetic force jig is in the form of a rubber roll. The method of claim 11, wherein a magnetic field pattern is inserted into the rubber roll and the magnetic field applied to the pattern is 300 to 1000 G. The method according to claim 10, wherein the UV curing device is any one selected from mercury, metal, and LED lamps and is irradiated with an amount of 30 to 200 mj of light. It is prepared from the magnetic pattern printing method of the gravure line using the ultraviolet curing coating composition for a magnetic pattern according to any one of claims 8 to 13,
An interior film with a hardness of H or more, stretch resistance of 150g (tungsten pin test) or more, and solvent resistance (MEK rubbing) of 20 times or more. 15. The method of claim 14, wherein the ultraviolet curing coating composition for a magnetic pattern is a magnetic material containing a ferromagnetic material, a weak magnetic material, a soft magnetic material and a magnetic material of two or more types of mixtures selected from the group consisting of a non-metallic material, the pattern is formed to have a color Interior film, characterized in that.

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