KR101968441B1 - Transfer film for Melamine board - Google Patents

Abstract

The present invention relates to a transfer film for a melamine board. According to an embodiment of the present invention, the transfer film for a melamine board comprises: a base unit which is composed of a mixture of at least two among polyethylene terephthalate (PET), polypropylene (PP), polyacrylonitrile (PAN), polyamide, polyvinyl chloride (PVC), polybutyleneterephthalate (PBT), polystyrene (PS) and polyethylene (PE); a metal depositing unit which is formed of at least on among aluminum, gold and silver, and is deposited on the upper part of the base unit; a first primer unit which is formed between the base unit and the metal depositing unit to attach the base unit, the metal depositing unit, and foreign materials; a printing unit which is formed at the upper part of the metal depositing unit, and realizes a fixed design by a metallic powder pigment; a second primer unit which is formed between the metal depositing unit and the printing unit to attach the metal depositing unit, the printing unit, and the foreign materials; a UV hard coating unit which is formed on the top surface of the printing unit; a third primer unit which is formed on the lower part surface of the base unit to attach the base unit, a melamine board, and the foreign materials; and a protection unit which is formed at the lower part of the base unit to protect the third primer unit, and is exfoliated to expose the third primer unit to the outside when transferring the melamine board of the transfer film. Therefore, the transfer film for a melamine board can provide excellent external appearances of the surface thereof and excellent mechanical and optical properties.

Description

Transfer film for melamine board {Transfer film for Melamine board}

The present invention relates to a transfer film for a melamine board, and relates to a transfer film for a melamine board which is transferred to a melamine board to provide a predetermined design appearance.

A variety of transfer methods have been developed and used for the purpose of decorating or functionalizing the surface of various products such as polyethylene resin and the like. For example, a screen printing method, a pad printing method and a thermal transfer printing method using a transfer paper are used .

The screen printing method is useful when printing on a surface of a product having a smooth surface such as a synthetic resin plate because the printing equipment is simple and the printing method is simple. However, when the surface to be printed is curved or multi- The precision of the pattern is decreased and it is hardly used.

The pad printing method is a method of printing a three-dimensional pattern on a flexible pad and printing the printed surface with the three-dimensional pattern filled with ink. In the case of a porcelain product, for example, a plate, It is troublesome to print several times according to the color by using a plurality of pads when printing a multicolored pattern, but also, when printing, the printed layer printed before is dried, It takes a long time to print and it is difficult to make the border of the pattern coincide with each other, so that there is a problem that precise printing can not be obtained.

In order to solve the problem of the multicolor pattern printing in the screen printing or the pad printing method described above, a thermal transfer printing method using a transfer paper is mainly used for printing on a synthetic resin product. In the above-described thermal transfer printing method using a transfer sheet, a heat-fusible peeling layer, a printing protective layer as required, a pattern printing layer and a hot-melt adhesive layer are successively laminated on the surface of a transfer material paper made of paper or a synthetic resin film, The transfer paper is brought into close contact with the surface of a transfer object, for example, a synthetic resin product, heated and pressed to transfer the print layer onto a transfer object, and then the transfer paper is separated from the print layer.

In such a transfer printing method, the pattern printed on the print layer of the transfer sheet is directly transferred to the transfer target body, so that a relatively elaborate polychromatic pattern appears on the surface of the transferred body in a simple manner. The transfer sheet and its manufacturing method used in this transfer printing method are disclosed in various documents. The conventional transfer sheet and its manufacturing method are mainly used for preventing the pattern from spreading by improving the composition of the melt release layer and the melt adhesion layer, To prevent it from becoming.

The pattern printed on the transfer sheet is transferred to a transfer object while being closely contacted with the transfer object so as to form a pattern on the transfer object. In this method, most of the transfer ink is printed on the transfer sheet, A method of printing on a transfer object pretreated with a polyester fabric or a polymer-based coating liquid is used.

As described above, the transfer paper used in the thermal transfer is usually produced by using the gravure printing method, the silk printing method, and the digital printing printing method (printer, plotter, electrostatic printer, etc.) After the pattern is printed, heat of about 120 to 270 ° C is directly or indirectly applied to produce a transfer paper.

However, since such a transfer method involves a lot of manufacturing steps, it takes a lot of time and effort to manufacture, a large production cost is required, and the cost of the product increases. In addition, when the transfer sheet is attached to a transfer object and printed, the transfer ratio is not so good, the transfer is difficult, transfer quality is poor, the film layer is weak to heat and the shape is deformed during transfer, and the durability is weak, .

Korean Patent Publication No. 88-781 discloses a thermal transfer sheet in which a hot-melt peeling wax layer, a polychromatic print layer, and a hot-melt adhesive layer are laminated on a transfer paper sheet. In this patent document, the heating and fusing wax layer is composed of a low molecular weight polyethylene, an ester wax, a paraffin wax, an ester resin, an ethylene / vinyl acetate copolymer and a hydrogenated petroleum resin. The melting adhesive layer is composed of a polyamide resin, .

U.S. Patent No. 3516842 discloses a thermal transfer paper formed by laminating a release layer, a primer protective layer, a print layer, and an adhesive layer on a transfer paper. According to the above-mentioned patent documents, the transfer sheet is made of kraft paper, the release layer is made of a waxy substance having a melting point of 80 to 120 ° C, and a primer protective layer is formed between the release layer and the print layer, When transferred to a product, the printed layer is protected by a primer protective layer located on the surface.

U.S. Pat. No. 4,555,436 discloses a thermal transfer paper comprising a transfer sheet, a molten glass layer, a barrier layer, a print layer and an adhesive layer. In this patent document, the release layer is composed of a solvent-type composition comprising a film-forming binder composed of a waxy wax, a rosin ester and a hydrocarbon resin, an ethylene-vinyl acetate copolymer and an organic solvent, and the barrier layer is a layer in which the print layer is permeated into the release layer And a polyester and rosin ester based on an aromatic acid are used so as to protect the printed layer after the transfer.

The protective layer and the barrier layer used in the above-mentioned U.S. Patent No. 3,516,842 and U.S. Patent No. 4,555,436 allow printing to be performed well during the manufacture of the transfer sheet and to prevent penetration of the transfer sheet print layer into the release layer and to protect the surface of the print layer And is located on the surface of the print layer after the transfer.

Japanese Patent Publication No. 51-33452 also discloses a transfer paper having a protective layer interposed between a release layer and a print layer. In the above-mentioned document, the protective layer is formed of acrylic resin, AS resin or ABS resin, It is judged that the layer protects the print layer.

An object of the present invention is to provide a transfer film excellent in appearance of the film surface and excellent in mechanical and optical properties.

The transfer film for a melamine board according to an embodiment of the present invention is a transfer film for a melamine board which is transferred onto a melamine board to provide a certain design appearance, and includes a film made of polyethylene terephthalate (PET), polypropylene (PP) A base portion composed of a mixture of at least two of rhenitrile (PAN), polyamide, polyvinyl chloride (PVC), polybutylene terephthalate (PBT), polystyrene (PS) And a first primer part formed between the base part and the metal deposition part for adhesion between the base part and the metal deposition part and the dissimilar material, A printing unit which is formed on the upper side of the metal vapor deposition unit and on which the predetermined design is realized by the metal powder pigment, A second primer part formed between the metal deposition part and the printing part for adhesion between the base part and the printing part, a UV hard coating part formed on the upper surface of the printing part, and a UV hard coating part formed on the base part for adhesion between the base part and the melamine board, A third primer portion formed on a lower side of the base portion and protecting the third primer portion and being peeled off when the melamine board of the transfer film is transferred to expose the third primer portion to the outside Wherein the UV hard coat portion comprises 2 to 5 parts by weight of hydroxyphenyl-triazine (HPT), 5 to 10 parts by weight of titanium dioxide, 5 to 10 parts by weight of cobalt oxide, 20 to 30 parts by weight of UV resin, 2 to 5 parts by weight of methyl ether, and 2 to 5 parts by weight of epoxy silane.

The first primer portion of the transfer film for a melamine board according to an embodiment of the present invention may include 10-20 parts by weight of a vinyl chloride-vinyl acetate copolymer, methyl methacrylate 15 5 to 10 parts by weight of a polyether modified dimethylpolysiloxane copolymer, 35 to 45 parts by weight of toluene and 30 to 35 parts by weight of methyl ethyl ketone.

The second primer portion of the transfer film for a melamine board according to an embodiment of the present invention comprises 30 to 40 parts by weight of methyl methacrylate, 20 to 30 parts by weight of toluene, and 35 to 45 parts by weight of methyl ethyl ketone .

The third primer portion of the transfer film for a melamine board according to an embodiment of the present invention may contain 15 to 30 parts by weight of a vinyl chloride-vinyl acetate copolymer, a polyvinyl chloride resin 3 5 parts by weight of silica powder, 2 parts by weight of silica powder, 25 to 35 parts by weight of toluene, 30 to 35 parts by weight of methyl ethyl ketone and 5 to 10 parts by weight of ethyl acetate.

The UV resin of the transfer film for a melamine board according to an embodiment of the present invention may be one of an epoxy compound, a urethane (meth) acrylate, a polyester (meth) acrylate and a polyol Lt; / RTI >

The printing unit of the transfer film for a melamine board according to an embodiment of the present invention may include a flat portion that is laminated to the metal vapor deposition unit through the second primer unit and a flat portion that protrudes from the upper side of the flat portion, The UV hard coating portion may be filled in a space defined by the solid body and the planar portion to make the upper surface flat.

According to the present invention, there is an effect that a metal pattern of a certain design can be printed finely and clearly by being printed on a metal vapor deposition part by gravure printing or the like.

1 is a schematic cross-sectional view showing a transfer film for a melamine board according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

1 is a schematic cross-sectional view showing a transfer film for a melamine board according to an embodiment of the present invention.

Referring to FIG. 1, a transfer film for a melamine board according to an embodiment of the present invention includes a base 10, a metal vapor deposition unit 20, a first primer unit 30, a printing unit 40, A primer part 50, a UV hard coating part 60, a third primer part 70 and a protecting part 80. [

The base portion 10 is formed of a material such as polyethylene terephthalate (PET), polypropylene (PP), polyacrylonitrile (PAN), polyamide, polyvinyl chloride (PVC), polybutylene terephthalate (PBT) PS), and polyethylene (PE).

The metal vapor deposition unit 20 may be formed of at least one of aluminum, gold, and silver, and may be deposited on the upper side of the base unit 10.

The first primer part 30 may be formed between the base part 10 and the metal vapor deposition part 20 for adhesion between the base part 10 and the metal vapor deposition part 20, have.

The first primer unit 30 may include 10 to 20 parts by weight of a vinyl chloride-vinyl acetate copolymer, 15 to 20 parts by weight of methyl methacrylate, a polyether modified dimethylpolysiloxane 5 to 10 parts by weight of a polyether modified dimethylpolysiloxane copolymer, 35 to 45 parts by weight of toluene and 30 to 35 parts by weight of methyl ethyl ketone.

Here, the vinyl chloride-vinyl acetate copolymer is used for adhesion between the base portion 10 and the metal vapor deposition portion 20.

The methyl methacrylate is also used for adhesion between the base portion 10 and the metal vapor deposition portion 20. The methyl methacrylate is used for bonding between the metal and the metal. And the vinyl chloride-vinyl acetate copolymer is used for bonding between the organic compound constituting the base portion 10 and the metal.

In addition, the polyether modified dimethylpolysiloxane is an additive which is applied to a coating object and serves to reduce surface tension.

The first primer unit 30 is formed by bonding not only the base portion 10 of the metal (aluminum, gold and silver) deposited on the base portion 10 but also the deposited metal to each other, And a firm layer is formed.

The printing unit 40 is formed on the upper side of the metal vapor deposition unit 20, and the predetermined design can be realized with the metal powder pigment.

Specifically, the printing unit 40 includes a flat portion that is stacked on the metal vapor deposition unit 20 through the second primer unit 50 and a flat portion that protrudes from an upper side of the flat portion, A solid body may be provided.

The second primer part 50 may be formed between the metal vapor deposition part 20 and the printing part 40 for adhesion between the metal vapor deposition part 20 and the printing part 40, have.

The second primer part 50 may be composed of 30 to 40 parts by weight of methyl methacrylate, 20 to 30 parts by weight of toluene, and 35 to 45 parts by weight of methyl ethyl ketone.

Here, the methyl methacrylate is used for adhesion between the metal vapor deposition unit 20 and the printing unit 40.

In the second primer part 50, the vinyl chloride-vinyl acetate copolymer is excluded because the metal vapor deposition part 20 and the printing part 40 are formed of metal , And the vinyl chloride-vinyl acetate copolymer used for bonding the organic compound and the metal is excluded.

The UV hard coating unit 60 may be formed on the upper surface of the printing unit 40. Specifically, the UV hard coating portion 60 may include 2 to 5 parts by weight of hydroxyphenyl-triazine (HPT), 5 to 10 parts by weight of titanium dioxide, 5 to 10 parts by weight of cobalt oxide, 20 to 30 parts by weight of UV resin 2 to 5 parts by weight of benzoin methyl ether, and 2 to 5 parts by weight of epoxy silane. The UV hard coating portion 60 is filled in a space provided by the upper surface of the flat portion and the side surface of the solid portion so that the upper surface is flat and the contact area with the printing portion 40 is widened.

Here, the hydroxyphenyl-triazine (HPT) is used as an organic absorbent for absorbing UV, and when exposed to UV, the base portion 10, the metal deposition portion 20, the first primer The strength of the UV is reduced so as to prevent damage to the printing portion (30), the printing portion (40), and the second primer portion (50).

The titanium dioxide and the cobalt oxide may be used as an inorganic absorbent for absorbing UV rays. The UV rays may cause the base portion 10, the metal vapor deposition portion 20, the first primer portion 30 ), The strength of the UV is weakened to prevent damage to the printing section (40) and the second primer section (50).

The UV resin may be any UV thermosetting resin selected from an epoxy compound, a urethane (meth) acrylate, a polyester (meth) acrylate, and a polyol (meth) acrylate.

The benzoin methyl ether is a photocuring initiator by UV.

Further, the epoxy silane acts as a silane crosslinking agent to bridge the polymers, and to improve the mutual bonding force.

The third primer part 70 is formed on the lower surface of the base part 10 for adhesion between the base part 10 and the melamine board and the dissimilar material.

The third primer part 70 may be prepared by mixing 15 to 30 parts by weight of a vinyl chloride-vinyl acetate copolymer, 3 to 5 parts by weight of a polyvinyl chloride resin, 2 parts by weight of a silica powder, 25 to 35 parts by weight of toluene, 30 to 35 parts by weight of methyl ethyl ketone, and 5 to 10 parts by weight of ethyl acetate.

The vinyl chloride-vinyl acetate copolymer is used for adhesion between the base 10 and the melamine board.

The protective part 80 is formed on the lower side of the base part 10 to protect the third primer part 70 and is peeled off when the melamine board of the transfer film is transferred, (70) is exposed to the outside.

Example  One

1. The base portion (10)

Polyethylene terephthalate (PET) was prepared in the form of a film having a thickness of 20 탆.

2. The metal vapor deposition unit (20)

Aluminum metal was deposited on the polyethylene terephthalate (PET) film

3. The first primer part (30)

13.6% by weight of a vinyl chloride-vinyl acetate copolymer, 15.3% by weight of methyl methacrylate, 6.3% by weight of a polyether modified dimethylpolysiloxane copolymer, 36% by weight of toluene, And 28.8% by weight of methyl ethyl ketone. The mixture was dispersed in a high-speed mixer for 20 minutes and then subjected to solution polymerization at 100 to 110 ° C for 5 to 6 hours, followed by cooling to 30 to 35 ° C.

4. The printing unit 40,

A flat part is formed of aluminum which is the same as aluminum of the metal vapor deposition part 20 and colored aluminum so as to be distinguished from aluminum used in the metal vapor deposition part 20, A certain design shape is realized with another colored aluminum to form a solid body.

5. The second primer part (50)

35% by weight of methyl methacrylate, 35% by weight of toluene and 40% by weight of methyl ethyl ketone, dispersed in a high-speed mixer for 20 minutes and then subjected to solution polymerization at 50 to 60 ° C for 3 to 4 hours , And cooled to 30 to 35 占 폚.

6. UV hard coating portion 60

6.9 wt% of hydroxyphenyl-triazine (HPT), 16.2 wt% of titanium dioxide, 12.1 wt% of cobalt oxide, 51 wt% of UV resin, 6.9 wt% of benzoin methyl ether and 6.9 wt% Curable for 60 seconds to 90 seconds at a light amount of 0.3J.

Here, as the UV resin, an epoxy compound was used.

7. The third primer unit (70)

19.5% by weight of vinyl chloride-vinyl acetate copolymer, 3.9% by weight of polyvinyl chloride resin, 2.6% by weight of silica powder, 33.7% by weight of toluene, 33.8% by weight of methyl ethyl ketone, And 6.5% by weight of acetate, dispersed in a high-speed mixer for 20 minutes, solution-polymerized at 50 to 60 ° C for 3 to 4 hours, and then cooled to 30 to 35 ° C.

8. Protective portion (80)

Toluene, a thermosetting resin, a curing agent and a slip agent.

Example  2 to 3 and Comparative Example  1 to 3

The UV hard coating portion 60, the third primer portion 70, the first primer portion 30, the printing portion 40, the second primer portion 50, the UV hard coating portion 60, And the protective portion 80 were composed of the composition shown in Table 1 below and other settings were carried out in the same manner as in Example 1 to prepare a transfer film.

(Each example shows the total sum of the compositions contained in the respective components (the first primer part 30, the second primer part 50, the UV hard coating part 60, the third primer part 70) 100% by weight for each component).

Table 1

exam

The physical properties of the transferred films obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were measured.

Each of the above transfer films (Examples 1 to 3 and Comparative Examples 1 to 3) was measured for heat resistance, scratch resistance, weather resistance, light resistance, water resistance and interlaminar bond strength, and the results are shown in Table 2 below.

The measurement of the physical properties was carried out by the following method.

Heat resistance: After the thermal transfer, the sharpness of the printing portion 40 and the degree of damage of the film layer were checked.

Scratch Resistance: Measured with a pencil hardness tester and confirmed as scratch on the surface. H is superior in scratch resistance to B, and the larger the number before H, the better the scratch resistance.

Weatherability: After UV irradiation for 72 hours using ATLAS or UVCON, discoloration was confirmed.

Light resistance: The steel / elongation was measured at constant time intervals while exposing the light source Xenon Arc to a closed space maintained at 63 ° C using a measuring instrument, a fade-o-meter.

Water resistance: Measured by the method of KS M 7025: 2012: 12.

Interlayer bonding force: Heat treatment was performed at a temperature of about 300 캜 for about 30 minutes. Then, the bonding force was measured using a push pull gauge.

Table 2

As shown in the above Table 2, the transfer films of Examples 1, 2 and 3 corresponding to the composition range of the present invention are superior to the transfer films of Comparative Examples 1, 2 and 3 in heat resistance, scratch resistance, weather resistance, Water resistance and interlaminar bond strength.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

10: Base portion
20: Metal deposition unit
30: First primer part
40:
50: Second primer part
60: UV hard coating part
70: Third primer part
80: Protection section

Claims (6)

A transfer film for a melamine board which is transferred onto a melamine board to provide a predetermined design appearance,
(PE), polypropylene (PP), polyacrylonitrile (PAN), polyamide, polyvinyl chloride (PVC), polybutylene terephthalate (PBT), polystyrene A base portion composed of at least two or more mixtures;
A metal deposition part formed of at least one of aluminum, gold, and silver and deposited on an upper side of the base part;
A first primer part formed between the base part and the metal deposition part for adhesion between the base part and the metal deposition part and the dissimilar material;
A printing unit formed on an upper side of the metal vapor deposition unit and having the predetermined design as a metal powder pigment;
A second primer part formed between the metal deposition part and the printing part for adhesion between the metal deposition part and the printing part and the dissimilar material;
A UV hard coating unit formed on an upper surface of the printing unit; And
A third primer part formed on a lower surface of the base part for adhesion between the base part and the melamine board and the dissimilar material; And
And a protection unit formed on a lower side of the base unit to protect the third primer unit and to be peeled off when the melamine board of the transfer film is transferred to expose the third primer unit to the outside,
Wherein the UV hard coating portion comprises:
2 to 5 parts by weight of hydroxyphenyl-triazine (HPT), 5 to 10 parts by weight of titanium dioxide, 5 to 10 parts by weight of cobalt oxide, 20 to 30 parts by weight of UV resin, 2 to 5 parts by weight of benzoin methyl ether, 2 to 5 parts by weight of silane,
The printing unit includes:
And a three-dimensional body that realizes the shape of the predetermined design through a planar portion that is laminated on the metal vapor deposition portion through the second primer portion and a protruding shape protruding from the upper surface of the planar portion,
Wherein the UV hard coating portion comprises:
Wherein a space provided by an upper surface of the flat portion and a side surface of the three-dimensional portion is filled with the upper surface so that the contact area with the printing portion becomes wider.
The method according to claim 1,
Wherein the first primer unit comprises:
10 to 20 parts by weight of a vinyl chloride-vinyl acetate copolymer, 15 to 20 parts by weight of methyl methacrylate, 5 to 10 parts by weight of a polyether modified dimethylpolysiloxane copolymer, 35 to 45 parts by weight of toluene, and 30 to 35 parts by weight of methyl ethyl ketone.
3. The method of claim 2,
Wherein the second primer unit comprises:
30 to 40 parts by weight of methyl methacrylate, 20 to 30 parts by weight of toluene, and 35 to 45 parts by weight of methyl ethyl ketone.
The method of claim 3,
Wherein the third primer unit comprises:
15 to 30 parts by weight of a vinyl chloride-vinyl acetate copolymer, 3 to 5 parts by weight of a polyvinyl chloride resin, 2 parts by weight of a silica powder, 25 to 35 parts by weight of toluene, 30 to 35 parts by weight of a ketone, and 5 to 10 parts by weight of ethyl acetate.
5. The method of claim 4,
The UV resin may comprise,
Wherein the film is one of an epoxy compound, a urethane (meth) acrylate, a polyester (meth) acrylate, and a polyol (meth) acrylate.
delete

Images