KR20080090880A - Mult adhesive color film - Google Patents

Abstract

A multi-adhesive color film is provided to secure color durability longer than a glue tinted film expressing color by mixing dyes in glue or a dyed film expressing color by adding dyes in a PET(Polyethylene Terephthalate) film. A multi-adhesive color film is composed of a first base layer and a ceramic coating layer formed on one surface of the first base layer. The ceramic coating layer includes a ceramic disperse solution containing ceramic powder dispersed equally. A ceramic disperse solution consists of an organic solvent, a dispersing agent, and dyes. Haze of the ceramic disperse solution is 0.1~4. Ceramic powder has a diameter below 200nm. In particular, the ceramic disperse solution consists of ceramic powder of 0.1~90wt.%, an organic solvent of 5~95wt.%, and a dispersing agent of 0.1~50wt.%.

Description

Multilayer adhesive color film {MULT ADHESIVE COLOR FILM}

1A is a lamination diagram of a multi-layered adhesive color film having a 1 ply structure according to a first embodiment.

1B is a lamination diagram of a multi-layered adhesive color film having a 2-ply structure according to the first embodiment.

FIG. 2A is a lamination view of a multilayered adhesive color film having a 1 ply structure according to a second embodiment. FIG.

FIG. 2B is a lamination diagram of a multi-layered adhesive color film having a 2-ply structure according to a second embodiment. FIG.

3A is a laminated view of a multi-layered adhesive color film having a 1 ply structure according to a third embodiment.

3B is a lamination diagram of a multi-layered adhesive color film having a 2-ply structure according to a third embodiment.

4A is a lamination diagram of a multi-layered adhesive color film having a one-ply structure according to the first embodiment.

4B is a lamination diagram of a multi-layered adhesive color film having a 2-ply structure according to a fourth embodiment.

The present invention relates to a multilayer adhesive color film used for automobiles, constructions, and the like.

In general, adhesive films used for automobiles, buildings, and the like are often given various colors. In this case, the colors are all expressed using dyes. In general, two methods are generally used for applying a color to an adhesive film. One is a case where a dye is mixed with an adhesive to show a color (glue tinted film), and the other is a case where a dye is incorporated into a PET film to show a color.

The durability of the color varies depending on the degree of discoloration, climate, temperature, etc., but in the case of glue tinted film, the dye can be easily mixed with the adhesive within 1-3 years (about 100-200 hours of accelerated weathering test). There is an advantage that can be expressed, but the durability of the collar is short.

In contrast, the dyed film has a longer color durability of about 3-5 years (500-1000 hours of accelerated weathering test), but the production process of the film is more difficult than the glutined film. In addition, when used in a car, it is common that the color changes to purple 5 years ago. Such a film is not suitable for use in construction because the color change is so fast. For this reason, sputtering films and vapor deposition films, which are metallic reflective films, are used in most construction films. However, its use is limited because of its reflective properties.

Therefore, the development of the multilayer adhesive color film which has the outstanding functionality at low cost is desired.

 Accordingly, the present invention is to provide a multilayer adhesive color film having an improved feature compared to a dyed film exhibiting a color by mixing the dye in the pressure-sensitive adhesive film or a dye-incorporated dye film in PET film For the purpose of

In addition, an object of the present invention is to provide a multi-layered adhesive color film having a low haze of 0.1-2 or less even when ceramic is used to prevent color discoloration.

In order to achieve the above object of the present invention, the present invention is capable of expressing transparent and various colors by uniformly mixing a ceramic dispersion and a dye or an organic pigment in an adhesive, and having a superior color durability than a conventional glutinated film or a die film. Provide a film.

In order to achieve the above object of the present invention, the present invention includes a first base layer and a ceramic coating layer formed on one surface of the first base layer, wherein the ceramic coating layer comprises a coating liquid using a ceramic dispersion in which ceramic powder is uniformly dispersed. It is provided by coating on one side of one base layer.

According to an embodiment of the present invention, the ceramic dispersion may include an organic solvent and a dispersant.

According to an embodiment of the present invention, the ceramic dispersion may include an organic solvent, a dispersant and an organic pigment or dye. The organic solvent may be a solvent such as alcohols and ketones, but is not particularly limited thereto.

According to an embodiment of the present invention, the haze of the ceramic dispersion has a range of 0.1-4.

 According to an embodiment of the present invention, the ceramic powder has a diameter of about 200 nm or less, about 0.1 to 80 weight percent, the organic solvent is about 5 to 95 weight percent, and the dispersant has a range of about 0.1 to 50 weight percent. .

According to an embodiment of the present invention, the ceramic coating layer is formed by uniformly mixing and coating the ceramic dispersion onto an adhesive or an adhesive binder.

According to an embodiment of the present invention, the multilayer adhesive color film may further have a release film for protecting the ceramic coating layer from foreign matter.

According to an embodiment of the present invention, the multilayer adhesive color film has a two-ply structure having a second base layer and a second adhesive layer sequentially formed between the ceramic coating layer and the release film.

According to an embodiment of the present invention, the multi-layer adhesive color film is a functional inorganic coating layer formed on the other surface of the first base layer; And a scratch prevention layer formed on the functional inorganic coating layer.

According to an embodiment of the present invention, the multi-layer adhesive color film is a scratch prevention layer formed on the other surface of the first base layer; A first adhesive layer formed on the ceramic coating layer; And a release film formed on the first adhesive layer to protect the first adhesive layer from foreign substances.

According to an embodiment of the present invention, the multilayer adhesive color film has a two-ply structure having a second base layer and a second adhesive layer sequentially formed between the ceramic coating layer and the release film.

According to an embodiment of the present invention, the ceramic coating layer may be formed by uniformly mixing and coating a curable resin on the ceramic dispersion to prevent scratching of the first base layer.

According to an embodiment of the present invention, the multilayer adhesive color film has a two-ply structure having a first adhesive layer, a second substrate layer, a second adhesive layer, and a release film sequentially formed on the other surface of the first substrate layer. .

According to an embodiment of the present invention, the second substrate layer is made of a polyester (PET) film coated with a metal.

According to an embodiment of the invention, the first base layer is made of polyethylene, polypropylene, polyreylene terephthalate, polyester, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polystyrene or polyamide, It is not limited to.

According to an embodiment of the present invention, the dispersant is included in 0.1 to 50% by weight relative to the ceramic powder and the organic solvent, the dispersant comprises a dispersant having an amine value, a dispersant having an acid value and a neutral dispersant, It is not specifically limited to this.

In order to achieve the object of the present invention, the present invention includes a first substrate layer, a first adhesive layer formed on one surface of the first substrate layer, the first adhesive layer is a ceramic dispersion liquid ceramic powder is uniformly dispersed It can be formed by uniformly mixing and coating an adhesive or an adhesive binder on the.

According to an embodiment of the present invention, the first adhesive layer may further include a dye or an organic pigment to express various colors.

According to an embodiment of the present invention, the ceramic dispersion may include an organic solvent and a dispersant.

According to an embodiment of the present invention, the ceramic powder is used to improve color durability, and the ceramic material includes metal oxides, non-oxides (nitrides, carbides, borides, silicides) and the like, but is not particularly limited thereto. .

According to an embodiment of the present invention, the dispersant serves to evenly disperse the ceramic in the ceramic dispersion solution, the dispersant includes an ionic, nonionic, amphoteric dispersant and the like.

For example, the dispersant is used in an amount of 0.001 to 50 wt% based on the weight of the ceramic powder and the organic solvent. When the amount of the dispersant is less than 0.001wt%, the viscosity lowering effect or storage stability is not good, and when the amount of the dispersant is more than 50wt%, the physical properties of the film may be reduced.

In order to achieve the above object, the present invention can provide a ceramic dispersion for ceramic coating using a ceramic powder, a solvent and a dispersant. In the preparation of the ceramic dispersion, the ceramic powder, the solvent and the dispersant may be uniformly mixed by using a stirrer, and then directly coated on the base layer of the multilayer adhesive color film or mixed with the adhesive to be coated or mixed with the anti-scratch liquid. Can be.

For example, the embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. These examples are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 1A to 4B.

The multilayer adhesive color film of the present invention has a ceramic coating layer using a color ceramic dispersion, which improves color durability, enables various color tonings, and has a low haze characteristic of 0.1-4. The ceramic coating layer may be used in admixture with other coating agents coated on a multilayer adhesive color film.

(First embodiment)

Multi-layer adhesive color film according to the first embodiment is a high durability film that can be transparent and give a variety of colors and uniformity by uniformly mixing the ceramic dispersion in the pressure-sensitive adhesive.

The multilayer adhesive color film may be manufactured as a multilayer adhesive color film having a single ply structure as in FIG. 1A as well as a multilayer adhesive color film having a two ply structure as shown in FIG. 1B.

As shown in Figure 1a, the multi-ply adhesive color film of the 1-ply structure is a scratch-resistant coating layer (hereinafter referred to as SR coating layer), the first base layer, the adhesive color ceramic coating layer, the release film is sequentially stacked. In addition, in the multilayered adhesive color film of the two-play structure illustrated in FIG. 1B, the SR coating layer, the first substrate layer, the adhesive color ceramic coating layer, the second substrate layer, the second adhesive coating layer, and the release film are sequentially stacked.

First, the first base layer and the second base layer is not particularly limited as long as it is commonly used in the art, polyethylene, polypropylene, polyethylene terephthalate, polyester, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polystyrene or It may be made of polyamide. The size of the base film is not particularly limited and the thickness may be changed depending on the use.

The SR coating layer serves to protect the first base layer from external physical shocks and to impart wear resistance of the film. The SR coating layer is coated on one surface (top surface) of the first base layer by a known method. The SR coating layer is not particularly limited as long as it is commonly used in the art, but may preferably be made of polyurethane acrylate.

The adhesive color ceramic coating layer is obtained by uniformly mixing a ceramic dispersion with an adhesive (or an adhesive) and coating and drying it by a known method such as gravure roll coating, slot die coating, reverse roll coating, or air knife coating. As a drying method after coating, a hot air drying method may be mainly used.

Here, the most important ceramic dispersion is a mixed liquid containing ceramic powder, an organic solvent and a dispersant, and the ceramic powder preferably has a diameter of about 200 nm or less. The composition ratio of the ceramic dispersion may range from about 0.1 to 90 weight percent of the ceramic powder, about 0.1 to 95 weight percent of the organic solvent, and about 0.1 to 50 weight percent of the dispersant. Here, the ceramic powder is used to improve color durability, and the ceramic material includes metal oxides, non-oxides (nitrides, carbides, borides) and the like, but is not particularly limited thereto. Solvents such as alcohols and ketones are used as the organic solvent, and the dispersant serves to evenly disperse the ceramic in the ceramic dispersion solution. The dispersant includes an ionic, nonionic and amphoteric dispersant.

The multilayer adhesive color film having such a adhesive color ceramic coating layer has a visible light transmittance (VLT) of 0% -90%, and haze has a low advantage in the range of 0.1-4.

In the adhesive color ceramic coating layer, pigments (dyes) may be added as necessary to express more various colors with the ceramic dispersion. The pigment is not particularly limited as long as it is commonly used in the art, for example, in the group consisting of carbon black, anthraquinone, phthalocyanine blue, diazos, monoazos, pyrantrone, perylene, quinacridone and indigoid pigments. It may be any one or more selected. In some cases, only carbon black may be used alone, or a mixture of blue or red pigments may be appropriately mixed in order to adjust desired color tone.

The second adhesive layer is provided between the release film and the second substrate layer, the release film is to protect the adhesive color ceramic coating layer from the foreign matter, a resin film or paper can be used.

4A and 4B, a functional inorganic coating layer may be further stacked between the first base layer and the SR coating layer. The functional inorganic coating layer may be applied to the above coating liquid and various functionalities may be added.

The composition ratio according to the manufacturing method and an example of the multilayered adhesive color film of the one-ply structure shown in Figure 1a is as follows.

30 kg of acrylic pressure-sensitive adhesive (manufactured by Wooin Chemtech, WA-9236), 1.2 phr of melamine curing agent (manufactured by Wooin Chemtech, M60), benzotriazole ultraviolet absorber (manufactured by Ciba Specialty Chemicals Korea, TINUVIN 384-2) 1.5 phr And 26.3 kg of a mixed solvent having a mass ratio of 4: 6 of toluene to prepare a composition for forming a transparent adhesive layer having a solid content of 24%, and then a color ceramic dispersion was added thereto as follows. 38.85 kg of a pigment consisting of 22.75 kg of carbon black, 10.15 kg of phthalocyanine blue and 5.95 kg of Vermilion red were mixed with 77.7 kg of toluene: methyl ethyl ketone: ethyl acetate (mass ratio 4: 4: 2) as a diluting solvent. After forming a transparent adhesive layer (adhesive color ceramic coating layer) by coating and drying with a thickness of 11 ㎛ on the lower portion of the PET film using a variety of cota, such as comma coat, gravure coat, slot die kota of line speed 20m / min A PET release resin film having a thickness of 25 μm was laminated on the bottom of the transparent adhesive layer (adhesive color ceramic coating layer).

Finally, 20 kg of polyurethane acrylate (manufactured by Uray, UC-150H) was mixed with 13 kg of a mixed solvent having a mass ratio of ethyl acetate and toluene 5: 5 to prepare a composition for forming a scratch-resistant coating layer (SR coating layer) having a solid content of 30%. Then, using a gravure coating method of the line speed of 40m / min, coating a PET film (first substrate layer) on the thickness of 2㎛ and dried to form a scratch-resistant coating layer to prepare a 1ply multilayer adhesive color film It was.

Second Embodiment

The multilayer adhesive color film according to the second embodiment is a film that can express a color uniformly by forming a color ceramic coating layer between the first base layer and the first adhesive layer.

The multilayer adhesive color film according to the second embodiment may be manufactured as a multilayer adhesive color film having a 2-ply structure as well as a multilayer adhesive color film having a single ply structure as shown in FIG. 2A.

As shown in Figure 2a, the multi-ply adhesive color film of the 1-ply structure, the SR coating layer, the first base layer, the color ceramic coating layer, the first adhesive layer, the release film is sequentially stacked. In addition, in the multilayered adhesive color film having a two-play structure shown in FIG. 2B, an SR coating layer, a first base layer, a color ceramic coating layer, a first adhesive layer, a second base layer, a second adhesive layer, and a release film are sequentially stacked. .

First, the first base layer is not particularly limited as long as it is commonly used in the art, and consists of polyethylene, polypropylene, polyethylene terephthalate, polyester, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polystyrene, or polyamide. It may be. The size of the base film is not particularly limited and the thickness may be changed depending on the use.

The second substrate layer may be made of a metal film such as an aluminum thin film coating, and by using such a metal film, it is possible to have an effect such as a solar heat shielding effect, a perspective pants from the outside to the inside.

The SR coating layer serves to protect the first base layer from external physical shocks and to impart wear resistance of the film. The SR coating layer is coated on one surface (top surface) of the first base layer by a known method. The SR coating layer is not particularly limited as long as it is commonly used in the art, but may preferably be made of polyurethane acrylate.

The color ceramic coating layer is obtained by coating and drying a ceramic dispersion by a known method such as gravure roll coating, slot die coating, reverse roll coating, air knife coating, and the like. Can be used. Here, the ceramic dispersion is a mixed liquid containing a ceramic powder, an organic solvent, and a dispersant, and the ceramic powder preferably has a diameter of about 200 nm or less. The composition ratio of the ceramic dispersion may range from about 0.1 to 90 weight percent of the ceramic powder, about 0.1 to 95 weight percent of the organic solvent, and about 0.1 to 50 weight percent of the dispersant. Here, the ceramic powder is used to improve color durability, and the ceramic material includes metal oxides, non-oxides (nitrides, carbides, borides) and the like, but is not particularly limited thereto. Solvents such as alcohols and ketones are used as the organic solvent, and the dispersant serves to evenly disperse the ceramic in the ceramic dispersion solution. The dispersant includes an ionic, nonionic and amphoteric dispersant. For example, the color ceramic layer may be added with pigments to express more various colors with the ceramic dispersion as needed.

Multilayer adhesive color film having such a color ceramic coating layer has a visible light transmittance (VLT) of up to 0% -90%, and has a low haze of 0.1-4 range.

The first adhesive layer is provided between the color ceramic coating layer and the second substrate layer, and the second adhesive layer is provided between the release film and the second substrate layer. The release film is for protecting the adhesive color ceramic coating layer from foreign matter, and a resin film or paper may be used.

(Third Embodiment)

The multi-layer adhesive color film according to the third embodiment is a film having high productivity by adding color ceramic dispersion to SR coating layer to increase transparency and varying color tone as well as electron beam irradiation or UV / heat curing.

The multi-layered adhesive color film according to the third embodiment may be produced as a multi-layered adhesive color film having a 2-ply structure as well as a multi-layered adhesive color film having a 1 ply structure as shown in FIG. 3a.

As shown in Figure 3a, the multi-layered adhesive color film of the 1-ply structure is sequentially laminated SR color ceramic coating layer, the first base layer, the first adhesive layer, the release film. In addition, in the multilayered adhesive color film of the two-play structure illustrated in FIG. 3B, an SR color ceramic coating layer, a first base layer, a first adhesive layer, a second base layer, a second adhesive layer, and a release film are sequentially stacked.

First, the first base layer and the second base layer is not particularly limited as long as it is commonly used in the art, polyethylene, polypropylene, polyethylene terephthalate, polyester, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polystyrene or It may be made of polyamide. The size of the base film is not particularly limited and the thickness may be changed depending on the use.

The SR color ceramic coating layer is a coating layer for protecting the first base layer from external physical impact and imparting abrasion resistance of the film and for color toning, and is coated on one surface (top surface) of the first base layer by a known method. SR color ceramic coating layer is a dry treatment by coating a well-known method such as gravure roll coating method, slot die coating method, reverse roll coating method, air knife coating method, etc., a mixture of a scratch prevention liquid and a ceramic dispersion uniformly, As a drying method after coating, a hot air drying method may be mainly used.

The anti-scratching liquid is not particularly limited as long as it is commonly used in the art, but preferably may be made of polyurethane acrylate. Here, the most important ceramic dispersion is a mixed liquid containing ceramic powder, an organic solvent and a dispersant, and the ceramic powder preferably has a diameter of about 200 nm or less. The composition ratio of the ceramic dispersion may range from about 0.1 to 90 weight percent of the ceramic powder, about 0.1 to 95 weight percent of the organic solvent, and about 0.1 to 50 weight percent of the dispersant. Here, the ceramic powder is used to improve color durability, and the ceramic material includes metal oxides, non-oxides (nitrides, carbides, borides) and the like, but is not particularly limited thereto. Solvents such as alcohols and ketones are used as the organic solvent, and the dispersant serves to evenly disperse the ceramic in the ceramic dispersion solution. The dispersant includes an ionic, nonionic and amphoteric dispersant. The SR color ceramic coating layer may be added with pigments (dyes) to express more various colors with the ceramic dispersion as needed.

Multilayer adhesive color film having such SR color ceramic coating layer has a visible light transmittance (VLT) of up to 0% -90%, and has a low haze of 0.1-4 range.

The first adhesive layer is provided between the first substrate layer and the second substrate layer, and the second adhesive layer is provided between the release film and the second substrate layer. The release film is for protecting the adhesive color ceramic coating layer from foreign matter, and a resin film or paper may be used.

The multilayer adhesive color film according to the present invention can be applied to color films for the purpose of decoration, selection of incident light wavelengths, prevention of seeing from the outside, etc. in vehicles, buildings, packaging materials, display materials, and the like.

In the above, the multilayer adhesive color film according to the present invention has been shown in accordance with the above description and drawings, but this is only an example, and various changes and modifications are possible without departing from the spirit of the present invention.

The present invention has a special effect that is excellent in color durability compared to a dyed film exhibiting a color by mixing a dye into a glutinated film or a PET film showing a color by mixing a dye with an adhesive.

In addition, the present invention has a special effect of having a low haze of 0.1-2 or less even when ceramic is used to prevent color discoloration.

Claims (19)

In the multilayer adhesive color film: A first substrate layer; And It includes a ceramic coating layer formed on one surface of the first substrate layer; The ceramic coating layer is a multilayer adhesive color film, characterized in that it comprises a ceramic dispersion in which ceramic powder is uniformly dispersed. The method of claim 1, The ceramic dispersion liquid is a multilayer adhesive color film, characterized in that it comprises an organic solvent and a dispersant. The method of claim 1, Wherein said ceramic dispersion further comprises a dye. The method of claim 1, The haze of the ceramic dispersion is a multilayer adhesive color film, characterized in that it has a range of 0.1-4. The method of claim 1, The ceramic powder has a diameter of about 200 nm or less, about 0.1 to 90 weight percent, the organic solvent is about 5 to 95 weight percent, the dispersing agent has a range of about 0.1 to 50 weight percent range . The method according to any one of claims 1 to 5, The ceramic coating layer is formed by uniformly mixing and coating the ceramic dispersion in an adhesive or an adhesive binder, characterized in that the multilayer adhesive color film. (Acrylic, rubber, polyvinyl ether, silicone) The method of claim 6, The multilayer adhesive color film Multilayer adhesive color film, characterized in that it further comprises a release film for protecting the ceramic coating layer from foreign matter. The method of claim 7, wherein The multilayer adhesive color film The multilayer adhesive color film further comprises a second substrate layer and a second adhesive layer formed sequentially between the ceramic coating layer and the release film. The method of claim 6, The multilayer adhesive color film A functional inorganic coating layer formed on the other surface of the first base layer; And Multilayer adhesive color film, characterized in that it further comprises a scratch prevention layer formed on the functional inorganic coating layer. The method according to any one of claims 1 to 5, The multilayer adhesive color film A scratch prevention layer formed on the other surface of the first base layer; A first adhesive layer formed on the ceramic coating layer; And The multilayer adhesive color film is formed on the first adhesive layer further comprises a release film for protecting the first adhesive layer from foreign matter. The method of claim 10, The multilayer adhesive color film The multilayer adhesive color film further comprises a second substrate layer and a second adhesive layer formed sequentially between the ceramic coating layer and the release film. The method according to any one of claims 1 to 5, The ceramic coating layer is formed by uniformly mixing and coating a curable resin in the ceramic dispersion to prevent scratching of the first substrate layer. The method of claim 12, The multilayer adhesive color film The multilayer adhesive color film further comprises a first adhesive layer, a second substrate layer, a second adhesive layer and a release film sequentially formed on the other surface of the first substrate layer. The method of claim 13, The second base layer is a multilayer adhesive color film, characterized in that the metal-coated polyester film. The method according to any one of claims 1 to 5, The first base layer is a multilayer adhesive color film, characterized in that made of polyethylene, polypropylene, polyethylene terephthalate, polyester, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polystyrene or polyamide. The method of claim 2, The dispersant is contained in 0.1 to 50% by weight relative to the ceramic powder and the organic solvent, The dispersant includes a dispersant having an amine number, a dispersant having an acid value, and a neutral dispersant. In the multilayer adhesive color film: A first substrate layer; A first adhesive layer formed on one surface of the first substrate layer; The first adhesive layer is a multilayer adhesive color film, characterized in that formed by uniformly mixing the adhesive or adhesive binder in a ceramic dispersion in which ceramic powder is uniformly dispersed. The method of claim 17, The first adhesive layer is a multi-layer adhesive color film, characterized in that it further comprises a dye or an organic pigment in order to express a variety of colors. The method of claim 17, The ceramic dispersion liquid is a multilayer adhesive color film, characterized in that it comprises an organic solvent and a dispersant.

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