KR100956060B1 - Method for producing chameleon film and chameleon film manufactured thereof - Google Patents

Abstract

PURPOSE: A method for manufacturing a chameleon film and the chameleon film which is manufactured using the same are provided to express more splendid colors than the colors which are emitted from a radiant light film due to a surface shape and color of a base sheet. CONSTITUTION: A method for manufacturing a chameleon film(10) using a radiant light film(20) comprises the following steps: processing both sides of the radiant light film with a primer; coating an adhesive on the radiant light film; and sticking a base sheet(30) on the upper side of the radiant light film and sticking a protective film(40) on the lower side of the radiant light film. The primer is manufactured by adding solvent-based polyurethanes to a mixture of an organic acid, modified polyol, tackifier, and an organic solvent.

Description

Method for producing chameleon film and chameleon film produced by this method {Method for producing chameleon film and chameleon film manufactured

According to the present invention, a primer treatment is applied to both sides of a radiant light film made of polyethylene terephthalate (PET), followed by bonding or adhering a protective film and a base sheet of a synthetic resin material to various angles according to a human viewing angle. By making chameleon film that changes color, it can be used as a fabric such as shoes, clothing, hats, bags, mobile phones, printed fabrics or logos attached to products to improve the value of the product. It relates to a method for producing a chameleon film and a chameleon film produced by this method.

In recent years, various commercially available products have basic quality and marketability depends on the shape and color of the design. In particular, in the case of shoes, clothing, hats, bags or various accessories that require a fashion sense, the shape or color of the design is further determined. The parts with different patterns and colors are mainly made of various materials such as natural leather, synthetic leather, synthetic rubber, and synthetic resin to form patterns, but the expression of colors to be expressed was limited.

On the other hand, there is a radiant light film produced and marketed by 3M as a film showing colorful and various colors depending on the angle of view of the person, but in the case of such a radiant light film, a film used as a base material Various colors can be produced according to the color of the.

As a design using such a principle, a thermoplastic polyurethane (TPU) or ethylene- which is a high molecular compound on the surface of 3M Radiant Light Film 1 as shown in FIGS. After adhering soft polymers (2, 2 ') such as vinyl acetate (EVA) sheet, polypropylene (PP), high density polyethylene (HDPE), low density polyethylene (LDPE), etc., the solvent contained in the adhesive is passed through a heating chamber. Radiant light protective film combined with a polymer compound, characterized in that the volatilization is known.

In the case of the conventional protective film as described above, the material of 3M Radiant Light Film is polyethylene terephthalate (PET), and the surface thereof is smooth, and thus, flexible polymer such as thermoplastic polyurethane (TPU), ethylene-vinylacetate (EVA), etc. When the adhesive is bonded, only the color of the radiant light film is expressed, not only the various colors of the soft polymer, but also the radiant light film made of polyethylene terephthalate (PET) material has low surface energy and low molecular weight on the surface. The wettability due to the compound and the releasing agent remained, there was a problem that the soft polymer adhered to both sides of the radial light film is easily separated.

Accordingly, the present applicant has developed a technology for improving the adhesive force between the radiant light film of polyethylene terephthalate (PET) material, the protective film and the base sheet as a method for improving the problems as described above 10-2009-0065494 Although the patent application, the adhesive method according to the above-described technique is performed by corona discharge treatment or plasma treatment on both sides of the radiant light film of polyethylene terephthalate (PET) material, and then by adhering or adhering the protective film and the base sheet, Although excellent in the process, the corona discharge treatment or plasma treatment process, and after the above-mentioned process treatment, there was a process inconvenience that must be carried out within a short time after the adhesion process.

Therefore, the present invention is a method for solving the problems as described above, after the radiant light film of polyethylene terephthalate (PET) material is subjected to a primer treatment on both sides of the protective film and the adhesive sheet or the adhesive sheet and then the protective film and the substrate sheet and By bonding or adhering, the adhesive light of the radiant light film, the protective film and the base sheet is excellent, and the shape and color of the base surface of the base film are reflected on the radiant light film to express more colorful and various colors. It is an object of the present invention to provide a method for producing a chameleon film.

When the protective film and the base sheet are adhered to the radiant light film of polyethylene terephthalate (PET) material by a conventional method, the surface energy of the radiant light film of PET material is low and Due to the low wettability due to the low molecular weight compound and the release agent, there is a problem in that the adherends adhered to each other in terms of adhesion to the protective film or the base sheet. In addition, a method of improving adhesion by corona or plasma treatment is used in the radiant light film. However, when the corona or plasma treated radiant light film has been treated for 2 hours after treatment, the adhesive effect is lowered and the adhesive strength is decreased. In the case of), the adhesive strength is not large, but in the case of a roll, the adhesive strength is different. Therefore, the present invention is to improve the adhesive stability (adhesive strength) of the PET-based film by providing a primer composition with improved adhesion to the PET-based film in order to solve the above problems.

And the present invention is a chameleon film produced by the above method can be expressed in a more colorful color than the various colors expressed in the radiant light film itself by the surface shape and color of the base sheet shoes, clothing Another object of the present invention is to provide a chameleon film, which is used to increase the value of a product by using a hat, a bag, a mobile phone, an interior, printed matter, or various accessories or a logo.

In the present invention for achieving the above object in the method for producing a chameleon film using a radial light film,

After the primer treatment on both sides of the radial light film, the adhesive or the adhesive is coated and then the base sheet to the protective film and the lower surface of the radiant light film on the upper surface of the radiant light film, respectively, characterized in that The manufacturing method of a chameleon film is made into a subject solving means.

And to solve the problem of adhesion of the film according to the corona or plasma treatment to the radiant light film as described above to provide a primer composition with excellent adhesion without corona or plasma treatment, the primer used in PET-based film has a thickness of 20 ~ It is preferable to carry out in a drying process of 45 ~ 55 ℃, 40 ~ 90 seconds while treating with 30㎛ (dry).

In addition, the base sheet preferably has a pattern selected from a grid pattern, a dot pattern, an animal pattern, a geometric pattern, a figure, a character, a picture, and one or more colors.

According to the present invention by the above-mentioned means for solving the problem, the radiant light film is subjected to a primer treatment on both sides of the protective film and the base sheet to be bonded or adhered, and then adhered or adhered to the protective film and the base sheet, the radiant light film and the protective film And the adhesiveness of the base sheet is excellent, and it is possible to express more colorful colors than the various colors expressed in the radiant light film itself by the surface shape and the color of the base sheet. It is expected that demand will expand in the future by increasing the value of products by using them in mobile phones, home appliances, interiors, printed materials or various accessories or logos.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail with reference to Figures 3 to 6, the drawings and reference to the construction and operation that can be easily understood by those skilled in the art in each drawing and detailed description Briefly or omitted.

When described in detail with reference to Figures 3 to 6 the accompanying drawings the technical idea according to the features of the present invention.

3 is a cross-sectional view for explaining a chameleon film according to the spirit of the present invention.

The present invention provides a method for producing a chameleon film using a radial light film,

Primer on both sides of the radial light film The present invention relates to a method for manufacturing a chameleon film, comprising: adhering or adhering a base sheet to a protective film and a lower surface of the radiant light film on the upper surface of the radiant light film after the treatment and coating the adhesive or the adhesive.

Radiant light film used in the present invention represents a different color according to the angle of view of the person, has a transparency in the nature of the film can provide a different color according to the color located below, These different colors are manufactured and sold by 3M as a film that changes colors when the viewing angle is shifted with blue, yellow, etc., depending on the viewing angle.

And the radiant light film (Radiant light film) applied in the present invention is not only 3M company, but also Aurora (Engelhard Co. Ltd., USA) of the same kind of film as 3M company's radiant light film (Aurora) Rainbow film from Film and Rainbow package Co. Ltd. (Taiwan) and hologram film produced by SK, Kolon, Geobong, Sunkyung, and Limetech are also applied. In addition to the film of the kind defined above, all films having equivalent physical properties may be applied.

Hereinafter, the present invention will be referred to as a 'radiant light film' throughout all kinds of films listed above.

According to the present invention, the radial light film has a structure of a protective film (Liner) for protecting the radial light film on the upper surface thereof and a base sheet which assists color production of the radial light film on the lower surface of the radial light film. Consists of

The radiant light film has a low surface energy in the case of the surface of the radiant light film of PET material when the protective film and the base sheet are adhered to each of the upper and lower surfaces by using a conventional adhesive. The wettability decreases due to the presence of low molecular weight compounds and release agents on the surface, and when the adhesive film is coated on the smooth surface of the radiant light film, then the protective film or the base sheet is adhered to the radiant light film and the protective film or substrate. There is a problem that the adhesive strength between the sheets, the adhered adherends are separated from each other.

Therefore, a feature of the present invention is that both surfaces of the radiant light film of the PET material inferior in wettability of the surface to prevent the adhesion between the adhesive film and the adhesion of the protective film and the base sheet to the radiant light film The primer treatment improves the wettability of the surface of the radiant light film to increase the compatibility with the adhesive or the adhesive. Thus, the adhesive force between the adhesives during the adhesion or adhesion between the protective film and the base sheet using the adhesive or the adhesive is improved. It is characterized by being able to increase.

And the primer applied to both sides of the radiant light film of the PET material of the present invention in more detail as follows.

The primer applied to both sides of the radiant light film of the present invention comprises a main mixture consisting of an organic acid, a modified polyol, a tackifier and an organic solvent;

It is prepared by adding a solvent-type polyurethane containing a solvent-type polyurethane or silica to the subject mixture.

The main mixture of the primer is 5 to 20 parts by weight of the modified polyol, 20 to 50 parts by weight of the tackifier and 5 to 10% by weight of the total solid content of the primer base mixture with respect to 100 parts by weight of the organic acid, Solvent-type polyurethane containing solvent-type polyurethane or silica uses 500-1,500 weight part with respect to 100 weight part of organic acids.

The organic acid used in the present invention is used to improve the adhesion of the film and is easily mixed with other additives. The organic acid used in the present invention is not particularly limited, and for example, toluic acid, fumaric acid, and adipic acid. , Terephthalic acid, benzoic acid or the like can be used by selecting one or more.

The modified polyol is used to improve the cohesion of the primer, one or more selected from epoxy modified polyol, acrylic modified polyol, dimethylol propionic acid modified polyol, dibutylol propionic acid modified polyol, and the amount of the organic acid It is preferable to use 5-20 weight part with respect to 100 weight part. When the modified polyol content is less than 5 parts by weight, the addition effect is lowered, the cohesive strength of the primer is lowered, and when used in excess of 20 parts by weight there is a fear that the storage stability of the primer.

The tackifier is used to increase the initial tack and adhesion of the primer, and may be used by selecting one or more from thermally reactive alkylphenol resins, thermoplastic terpene modified phenol resins, rosin and rosin ester resins, and coumaroneindine resins. In addition, it is preferable to use 20-50 weight part with respect to 100 weight part of organic acids. When the content of the tackifier is less than 20 parts by weight, there is a fear that the initial adhesive strength is reduced, when the content of the tackifier exceeds 50 parts by weight, there is a fear that the adhesive strength of the primer is reduced due to the low molecular weight in the composition of the primer.

In addition, the organic solvent is used in consideration of viscosity stability, film transparency, compatibility and solubility, for example, alcohols, ketones, esters, methyl cyclohexane, methyl ethyl ketone, cyclohexane, acetone, ethyl acetate, It is preferable to use the combination ratio or mixing ratio which can be melt | dissolved in isopropanol, ethanol, etc., and to use 2 or more types together. When the organic solvent is used alone, storage stability and solubility are poor, and the organic solvent used in the present invention is It is preferable to adjust and use so that the total solids of a primer main mixture may be 5-10 weight%.

In the present invention, the solvent-type polyurethane is to be added to the solvent based on 100 parts by weight of the thermoplastic polyurethane resin so that the total solids of the solvent-type polyurethane is 5 to 10% by weight, the solvent-type polyurethane containing silica Silver comprises 1-3 parts by weight of silica with respect to 100 parts by weight of the thermoplastic polyurethane resin, the solvent is added so that the total solid content of the solvent-containing polyurethane containing the silica is 5 to 10% by weight. At this time, the silica is used to improve the adhesion, the silica used is preferably fumed silica (fumed silica).

The thermoplastic polyurethane resin used in the present invention is a resin that is excellent in mechanical strength, durability, flexibility, adhesive properties, and exhibits high adhesive strength, and is easy to handle and easily mixed with other resins. Polyester-based, polycaprolactone-based thermoplastic polyurethane resin and the like can be used, it is preferable to use alone or more selected.

The solvent is used in consideration of viscosity stability, film transparency, compatibility and solubility. For example, ketones and esters are used, and a combination ratio or a mixing ratio that can be dissolved in methyl ethyl ketone, cyclohexane, ethyl acetate, etc. It is preferable to use together 2 or more types. When the solvent is used alone, storage stability and solubility are poor.

In the present invention, the solvent type polyurethane or the solvent type polyurethane containing silica is preferably used in an amount of 500 to 1,500 parts by weight based on 100 parts by weight of an organic acid. When the content of solvent-type polyurethane or solvent-containing polyurethane containing silica is less than 500 parts by weight, the adhesive strength of the primer may be lowered. When it exceeds 1,500 parts by weight, the viscosity increases, the solubility decreases, and further adhesion is improved. No effect

And the preparation of the above primer is a solvent-based polyurethane, or a thermoplastic polyurethane resin prepared so that the total solid content of the solvent-based polyurethane to 5 to 10% by weight separately by adding a solvent to 100 parts by weight of the thermoplastic polyurethane resin separately 1 to 3 parts by weight of silica is added per 100 parts by weight of solvent to prepare a solvent-containing polyurethane containing silica prepared so that the total solid content of the solvent-containing polyurethane containing silica is 5 to 10% by weight. .

Then, 5 to 20 parts by weight of the modified polyol is added to 100 parts by weight of the organic acid, the organic solvent is mixed so that the total solid is 5 to 10% by weight, stirred for 20 to 40 minutes, and 20 to 50 parts by weight of the tackifier is added. The mixture was stirred for about 15 minutes more to prepare a main mixture, and then the premixed solvent mixture polyurethane containing 500 to 1500 parts by weight of the solvent-based polyurethane (total solids 5 to 10 wt%) was prepared. And mixed with stirring to prepare a primer for a radiant light film of PET material of 5 to 10% by weight total solids.

The curing agent that can be used in the primer of the present invention is a conventional curing agent, the adhesive force may be increased by using a mixture of isocyanate-based curing agent in the primer composition for the radial light film of PET material. It is preferable to use 3 to 5 parts by weight of an isocyanate curing agent with respect to 100 parts by weight of the primer, and when the content is less than 3 parts by weight, there is no curing agent effect. There is a fear that the workability is lowered.

And the primer used in the radiant light film as described above is treated with a thickness of 20 ~ 30㎛ (dry), it is preferable to dry for 40 to 90 seconds at a temperature of 45 ~ 55 ℃ and then to coat the adhesive or adhesive.

In the present invention, the protective film is a synthetic resin film of transparent or translucent material, polyethylene terephthalate resin, polyethylene resin, polyvinyl chloride resin, polypropylene resin, polystyrene resin, polycarbonate resin, polyurethane resin, etc. You can use the material selected from.

In the present invention, the base sheet is preferably used by selecting one of synthetic resin sheet, natural rubber or synthetic rubber sheet, textile sheet, natural leather or synthetic leather sheet, paper sheet, wood sheet, glass fiber sheet. .

The synthetic resin sheet is a specific example, for example, polyolefin resin, polynorbornene-based resin, cycloolefin-based resin, polyvinyl chloride-based resin, cellulose-based resin, styrene-based resin, polymethyl methacrylate-based resin, polyvinyl acetate Resin, polyvinylidene chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, polybutylene terephthalate resin, polyethylene terephthalate resin, polysulfone resin, polyether sulfone resin, A material selected from polyether ether ketone resin, polyarylate resin, polyamideimide resin, polyimide resin, polyurethane resin and the like can be used.

In the present invention, it is preferable that the base sheet has a pattern selected from a grid pattern, a dot pattern, an animal pattern, a geometric pattern, a figure, a character, a picture, etc. and one or more colors.

Therefore, the chameleon film produced by the method for producing a chameleon film of the present invention is thermoplastic polyurethane (TPU), ethylene vinyl acetate (EVA), rubber (RUBBER), fiber (TEXTILE), polycarbonate (PC), polylactic acid (PLA), polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), glass fiber reinforced plastic (FRP), glass (GLASS), aluminum (ALUMINUM), wood (WOOD), etc. Can lose.

When the base sheet having the various patterns and colors is adhered to the lower portion of the radiant light film, the base sheet exhibits various patterns and colors, and at the same time, displays different colors depending on the viewing angle which is characteristic of the radiant light film. It is possible to further provide a variety of other colors mixed with the color provided from the base sheet to further increase the commerciality.

And the thickness of the protective film and the base sheet is not particularly limited, and may be variously applied depending on the purpose and need to be used. In the present invention, the thickness of the protective film and the base sheet were used 25㎛ ~ 5㎜ respectively.

In the present invention, the adhesive or pressure-sensitive adhesive is not particularly limited, and may be used by selecting one or more from polyurethane, acrylic, ethylene-vinylacetate (EVA) and polyamide. The viscosity of the adhesive or adhesive used should be 4,000 to 8,000 cps and the solids should be at least 25 to 45 percent by weight in order to achieve uniform coating on the radiant light film.

In addition, when using an adhesive, a curing agent may be used in order to make the adhesive strength of each substrate uniform. The curing agent usable in the present invention is a conventional curing agent, and it is preferable to use 3 to 5 parts by weight of an isocyanate curing agent based on 100 parts by weight of the adhesive. When the content is less than 5 parts by weight, there is no curing agent effect. When the content of the curing agent is more than 5 parts by weight, the curing speed is high, so that the use time may be shortened and workability may decrease.

And the chameleon film according to the present invention will be described in detail with reference to FIG.

3 is a cross-sectional view showing a cross section of the chameleon film showing a technical idea according to the present invention.

The present invention is a primer treatment on both sides of the radiant light film 20, and coated by applying an adhesive or an adhesive on the surface-treated both sides, the protective film 40 on the upper surface of the radiant light film 20 And by bonding or adhering the base sheet 30 to the lower surface of the radiant light film 20 to prepare a chameleon film 10 to provide a variety of colors according to the angle of view.

The radiant light film 20 has a high adhesive strength by improving the adhesive strength with the protective film 40 and the base sheet 30 which is modified by a primer treatment to be adhered or adhered by an adhesive or an adhesive.

In addition, the protective film 40 adhered or adhered to the upper surface is protected by preventing the radial light film 20 from being damaged by external friction or pressure, thereby providing the radial light film 20. Make sure that different colors are maintained.

In addition, the base sheet 30 adhered to or adhered to the lower surface may be formed using a pattern selected from a grid pattern, a dot pattern, an animal pattern, a geometric pattern, a figure, a character, a picture, and the like with one or more colors. When the base sheet is adhered or adhered to the lower part of the radiant light film, it exhibits various patterns and colors, and the color provided from the base sheet by displaying different colors depending on the viewing angle characteristic of the radiant light film. It is possible to further provide various other colors mixed with.

Therefore, such a chameleon film reflects the shape and color of the base sheet of the base sheet to the radiant light film to express more colorful and diverse colors, such as shoes, clothing, hats, bags, logos, labels, packaging covers, and glass windows. Not only can be applied to products requiring various designs and colors, but also excellent adhesion, the base sheet and the protective film and the radiant light film are not easily peeled off, so it is easy to use and can extend the service life of the product. will be.

Hereinafter, the present invention will be described in detail through the following Preparation Examples and Examples, but are not necessarily limited to the Preparation Examples and Examples.

1. Primer manufacturer

(Primer-1)

First, methyl ethyl ketone was mixed with 100 parts by weight of polyether, and the total solid content of the solvent-based polyurethane was added to 10 wt% to prepare a solvent-based polyurethane.

100 to 300 rpm was mixed with 100 parts of toluic acid, 10 parts of epoxy-modified polyol (YU-300, Kukdo Chemical), and 729 parts of cyclohexane, an organic solvent, 243 parts of methyl ethyl ketone, and 243 parts of ethyl acetate. After stirring for 30 minutes, the main mixture to which 25 parts by weight of alkylphenol resin (CK-1634, Kolon) was added was stirred for about 10 minutes. Thereafter, 1,350 parts by weight of a solvent-based polyurethane (total solid content of 10% by weight) prepared in advance was mixed with the stirring main mixture and stirred at 200 to 400 rpm to obtain a primer-1 for a radial light film of PET material having a total weight of 10% by weight of a solid. Prepared.

(Primer-2)

First, 2 parts by weight of fumed silica is added to 100 parts by weight of polyether, and methyl ethyl ketone is mixed to add 10% by weight of the total solid content of the solvent-based polyurethane, thereby preparing a solvent-containing polyurethane containing silica. It was.

100 to 300 rpm was mixed with 100 parts of toluic acid, 10 parts of epoxy-modified polyol (YU-300, Kukdo Chemical), and 729 parts by weight of cyclohexane as an organic solvent, 243 parts by weight of methyl ethyl ketone, and 243 parts by weight of ethyl acetate. After stirring for 30 minutes, 25 parts by weight of alkylphenol resin (CK-1634, Kolon) was added and stirred for about 10 minutes. Thereafter, 1,350 parts by weight of the prepared solvent-containing polyurethane (10 wt% total solids) containing silica was mixed with the stirring mixture and stirred at 200 to 400 rpm to prepare a primer for a radial light film of PET material having a total solid content of 10 wt%. do.

1. Chameleon Film Manufacturing

(Example 1)

3 parts by weight of a curing agent based on 100 parts by weight of the primer-1 was added to the radiant light film (CM500, 3M), followed by drying at 50 ° C. for 1 minute in an oven. On both sides of the radiant light film treated with primer-1, the base sheet was attached with a base sheet having a thickness of 0.2 mm having a logo and a character of a thermoplastic polyurethane (TPU) resin as a base sheet. A chameleon film was prepared by attaching a transparent protective film of thermoplastic polyurethane (TPU) resin having a thickness of 0.03 mm on the upper surface thereof, and the prepared chameleon film is shown in FIG. 4. At this time, the adhesive was bonded using a polyurethane adhesive, and a 10 mm adhesive at one end in the longitudinal direction of the radial light film was not applied to measure the peel adhesive strength.

(Example 2)

3 parts by weight of a curing agent based on 100 parts by weight of primer-2 was added to the radiant light film (CM592, 3M), and treated with a thickness of 20 to 30 μm (dry), followed by drying in an oven at 50 ° C. for 1 minute. On both sides of the radiant light film treated with primer-2, 0.2 mm thick base sheet having a shoe painting was attached to the bottom surface of the radiant light film with a thermoplastic polyurethane (TPU) resin. A chameleon film was prepared by attaching a transparent protective film of thermoplastic polyurethane (TPU) resin having a thickness of 0.03 mm, and the prepared chameleon film is shown in FIG. 5. At this time, the adhesive was bonded using a polyurethane adhesive, and a 10 mm adhesive at one end in the longitudinal direction of the radial light film was not applied to measure the peel adhesive strength.

(Example 3)

The chameleon film was manufactured by the same method as Example 1 using the Aurora film of Engelhard Co., Ltd., USA.

(Example 4)

The chameleon film was manufactured by the same method as Example 2 using the Aurora film of Engelhard Co., Ltd., USA.

(Comparative Example 1)

0.2 mm thick substrate having white with thermoplastic polyurethane (TPU) resin as a base sheet on the bottom surface of the radiant light film by applying an adhesive on both sides of the radiant light film (CM592, 3M) without a pretreatment process The sheet was attached, and a film was prepared by attaching a transparent protective film of thermoplastic polyurethane (TPU) resin having a thickness of 0.03 mm on the upper surface thereof, and the prepared film is shown in FIG. 6. At this time, the adhesive was bonded using a polyurethane adhesive, and a 10 mm adhesive at one end in the longitudinal direction of the radial light film was not applied to measure the peel adhesive strength.

(Comparative Example 2)

The Aurora film of Engelhard Co., Ltd. (USA) was washed three times using an ultrasonic film containing methanol, dried in a vacuum oven, and then treated in the same manner as in Comparative Example 1. Chameleon film was prepared.

(Comparative Example 3)

The radiant light film (CM500, 3M) was washed three times with an ultrasonic wave containing methanol, dried in a vacuum oven, pretreated, and the surface of the radiant light film was subjected to corona discharge treatment.

The corona discharge treatment was performed under a treatment condition of 800 W · min / m 2 using a corona discharge processor (Plasma Life Co., Ltd.). Then, the contact angle of the corona discharged radial light film was left at 23 ° C. and 65% relative humidity for 30 minutes, and then under the same conditions using a contact angle meter CA-D (manufactured by Kyowa Interface Science Co., Ltd.) under the atmosphere. After measuring 10 times using the stored distilled water, the average value was measured as 40 degrees.

After both surfaces are corona discharged, the base sheet on the lower surface of the radiant light film, which is left at room temperature for 4 hours, is a thermoplastic polyurethane (TPU) resin 0.2 mm having a red background and a star pattern. A thick base sheet was attached, and a chameleon film was prepared by attaching a transparent protective film of a thermoplastic polyurethane (TPU) resin having a thickness of 0.03 mm. The prepared chameleon film is shown in FIG. 4. At this time, the adhesive was bonded using a polyurethane adhesive, and a 10 mm adhesive at one end in the longitudinal direction of the radial light film was not applied to measure the peel adhesive strength.

2. Adhesion Test

The specimens of Examples 1 to 4 and Comparative Examples 1 to 3 were prepared in a size of 10 × 100 mm, and then peel strength was measured in accordance with ASTM 1876-72 using a universal testing machine (Lloyd LR5K). It was. Tensile speed was measured in 200mm / min and the results are shown in Table 1 below.

division Example Comparative example One 2 3 4 One 2 3 Peel Adhesion Strength (N / cm) 29 32 30 31 No adhesion No adhesion 5

As seen above, Examples 1 to 4 show both sides of the radial light film or the aurora film. By performing the primer treatment to improve the wettability of the surface, compared with Comparative Examples 1 to 3, it was found that the adhesive strength with the adhesive is improved and the peeling adhesive strength is very excellent.

And the chameleon film of Examples 1 and 2 as shown in Figures 4 and 5 by bonding the base sheet to the lower surface of the radiant light film using a pattern and color, various patterns and colors of the base sheet It is not composed of one color but various colors, and the color of the base sheet is mixed with the color of the radiant light film to provide another color, and the chameleon film exhibits various colors according to the angle of viewing. It can be seen that it provides.

However, Comparative Examples 1 and 2 were not treated with a primer on the radiant light film, the adhesion strength is difficult to measure the adhesion strength compared to the primer treatment Examples 1 to 4, and Comparative Example 3 is 4 after the corona discharge treatment When the time elapsed, the corona discharge treatment effect was lowered and the adhesive strength was lowered. Particularly in FIG. 6, which is the chameleon film of Comparative Example 1, a chameleon film is produced by using a base sheet having no specific pattern and having a white color, and thus, various colors cannot be provided as compared with the embodiment. While providing only the combined color in the radial light film, it can be seen that it provides only the color provided according to the viewing angle of the characteristic of the radial light film.

Also in the case of Examples 3 and 4 it was found that the peeling adhesive strength is superior to Comparative Example 2, chameleon film showing a variety of colors according to the angle of view as shown in Examples 1 and 2.

As described above, the method of manufacturing the chameleon film of the present invention and the chameleon film prepared by the method are applied to both sides of the radiant light film to adhere to the base sheet, and then adhered to the protective film and the base sheet, thereby providing excellent adhesion. In addition, it is possible to express more colorful colors than the various colors expressed on the radiant light film itself by the surface shape and color of the base sheet, so shoes, clothing, hats, bags, mobile phones, home appliances, interiors, printed materials that require fashion sense In addition, it is possible to use various accessories or logos to increase the value of the product.

As described above, the method of manufacturing a chameleon film according to a preferred embodiment of the present invention and the chameleon film produced by the method are shown according to the above description and drawings, but this is merely described for example and the technical features of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit.

1 is a cross-sectional view showing a cross section of the radial light protective film combined with a conventional polymer compound,

Figure 2 is a cross-sectional view showing a cross-section of the conventional radiant light protective film combined with another polymer compound,

3 is a cross-sectional view showing a cross section of the chameleon film showing a technical idea according to the present invention;

Figure 4 is a photograph showing a chameleon film prepared according to Example 1 of the present invention,

Figure 5 is a photograph showing a chameleon film prepared according to Example 2 of the present invention,

Figure 6 is a photograph showing a chameleon film prepared according to Comparative Example 1 of the present invention.

Explanation of symbols on the main parts of the drawings

10: chameleon film

20: radiant light film 30: base sheet

40: protective film

Claims (15)

In the manufacturing method of the chameleon film using a radial light film, After primer treatment on both sides of the radiant light film, an adhesive or an adhesive is coated, and then the base sheet is adhered or adhered to the lower surface of the protective film and the radiant light film, respectively, on the upper surface of the radiant light film, The primer is a subject mixture consisting of an organic acid, a modified polyol, a tackifier and an organic solvent; Method for producing a chameleon film, characterized in that by adding a solvent-type polyurethane containing a solvent-type polyurethane or silica to the subject mixture. The method of claim 1, The main mixture of the primer is 5 to 20 parts by weight of the modified polyol, 20 to 50 parts by weight of the tackifier and 5 to 10% by weight of the total solid content of the primer base mixture with respect to 100 parts by weight of the organic acid, Solvent-type polyurethane containing a solvent-type polyurethane or silica is a method for producing a chameleon film, characterized in that using 500 to 1,500 parts by weight based on 100 parts by weight of an organic acid. The method of claim 1, Wherein said organic acid is selected from one or more of toluic acid, fumaric acid, adipic acid, terephthalic acid, benzoic acid, and used. The method of claim 1, The modified polyol is a method for producing a chameleon film, characterized in that one or more selected from epoxy modified polyol, acrylic modified polyol, dimethylol propionic acid modified polyol, dibutylol propionic acid modified polyol. The method of claim 1, The tackifier is a method for producing a chameleon film, characterized in that one or more selected from the heat-reactive alkylphenol resin, thermoplastic terpene modified phenol resin, rosin and rosin ester resin, coumaroneindine resin. The method of claim 1, The organic solvent is used in combination of two or more of methyl cyclohexane, methyl ethyl ketone, cyclo hexane, acetone, ethyl acetate, isopropanol, ethanol, the method for producing a chameleon film. The method of claim 1, The solvent-type polyurethane is a solvent-based polyurethane is added so that the total solid content of the solvent-based polyurethane is 5 to 10% by weight based on 100 parts by weight of the thermoplastic polyurethane resin, the solvent-type polyurethane containing silica is thermoplastic poly 1 to 3 parts by weight of silica with respect to 100 parts by weight of the urethane resin, and a solvent is added to the total solid content of the solvent-type polyurethane containing the silica is 5 to 10% by weight, the method for producing a chameleon film . The method of claim 7, wherein The thermoplastic polyurethane resin is selected from the group consisting of polyether-based, polyester-based, polycaprolactone-based thermoplastic polyurethane resin alone or more, The said solvent is used in combination of 2 or more types in methyl ethyl ketone, cyclohexane, and ethyl acetate, The manufacturing method of the chameleon film characterized by the above-mentioned. The method of claim 1, The base sheet is a chameleon film which is used by selecting one of synthetic resin sheet, natural rubber or synthetic rubber sheet, textile sheet, natural leather or synthetic leather sheet, paper sheet, wood sheet, glass fiber sheet. Manufacturing method. By the manufacturing method according to any one of claims 1 to 9, The protective film (Liner) for protecting the radiant light film on the upper surface of the radiant light film and the base sheet to assist the color production of the radiant light film on the lower surface of the radiant light film Chameleon film, characterized in that. delete delete delete delete delete

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