JPH04305449A - Preparation of colored film - Google Patents

Abstract

PURPOSE:To form a colored film not lowered in its elongation by the heat at the time of vacuum molding and having no fault by applying laminating processing to the surface of the specific colored coating layer constituting a colored base film to form a clear layer. CONSTITUTION:A composition for a colored film is prepared from essential components, that is, at least one kind of a resin composition selected from a mixture of a polyol resin with a mean MW of 1000-30000 having a hydroxyl group at the terminal of the main chain thereof and a crosslinking agent being a polyisocyanate compound with a mean MW of 400 or more, a mixture of an acrylic resin and a vinyl chloride/vinyl acetate resin and a polyurethane resin, a colorant and an org. solvent. The colored coating layer 10 formed using said composition, a base film 9, a self-adhesive layer 8 and a releasable sheet 7 are successively laminated to constitute a colored base film. Further, the clear layer provided to the surface of the colored coating layer 10 by laminating processing is formed by successively laminating process paper 12, a clear film 11 and a hot-melt adhesive layer 13 if necessary.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing colored films.

0002

[Prior Art and its Problems] In recent years, methods for attaching colored films to parts such as automobile parts by vacuum forming have been developed, even for parts with complex shapes, compared to methods in which colored coating compositions are directly applied to the parts. It is beginning to be used in place of the painting method because it has the advantage of being able to provide a colored layer with a uniform thickness and also being able to easily print designs.

Vacuum forming is explained using, for example, FIGS. 1 and 2. After placing a colored film 2 for vacuum forming on the top surface of a vacuum device 6 equipped with a heater 1 and a stand 4, the colored film 2 is heated by a heater. Heating (usually 100~15
The colored film 2 can be applied to the surface of the member 3 in close contact with the surface of the member 3 by softening it (0° C.) and then sucking the gas in the room. Conventionally, the colored film used is a base film such as a polyurethane film or a polyester film, with an adhesive layer on one side and an acrylic polyol/polyisocyanate metallic coating layer and a clear coating layer on the other side. ing. However, these metallic and clear coatings have the disadvantage that when the temperature of the base film reaches a temperature higher than that at which vacuum forming is possible, the elongation rate of the coating decreases, resulting in coating defects such as cracks, peeling, etc. in the coating after molding. Ta.

[0004] Furthermore, in order to obtain sufficient elongation of the coating film, the metallic layer, which is a colored layer, and the clear layer covering this layer need to be approximately twice as thick as a general coating film. When spray painting is used to increase the film thickness, a large amount of thinner is used, which has the disadvantage that the thinner impregnates the base film and causes foaming of the base film, colored layer, clear layer, etc. during vacuum forming. Ta.

[0005]

[Means for Solving the Problems] As a result of extensive research in order to solve the above problems, the present inventors have developed a method of laminating a colored base film having a specific colored coating layer. It was discovered that the colored film obtained by forming a clear layer on the surface does not lose its elongation rate due to heat during vacuum forming, and forms a colored film with an excellent appearance without defects such as foaming. The invention was completed.

That is, the present invention provides a mixture of a polyol resin having an average molecular weight of 1,000 to 30,000 having a hydroxyl group at the end of its main chain and a crosslinking agent of a polyisocyanate compound having an average molecular weight of 400 or more (hereinafter abbreviated as "mixture A"). , a mixture of acrylic resin and vinyl chloride/vinyl acetate resin (
Hereinafter, it will be abbreviated as "mixture B." ) and polyurethane resins, a colored coating layer and a base film formed from a colored coating composition containing as essential components at least one resin composition (I) selected from polyurethane resins, a colorant (II), and an organic solvent (III). , a colored base film is formed by sequentially laminating an adhesive layer and a release sheet, and a clear layer is formed on the surface of the colored coating layer by lamination to obtain a colored film. A manufacturing method is provided.

First, the colored coating composition used in the colored coating layer of the method of the present invention will be described.

The mixture (A) of the resin (I) used in the pigmented coating composition is a mixture of a polyol resin and a polyisocyanate compound.

Polyol resins have an average molecular weight of 1 or more, having an average of two or more hydroxyl groups in one molecule, and having the hydroxyl groups at the ends of the main chain of the molecule, and substantially no hydroxyl groups in the side chains of the molecule.
000-30000, preferably 3000-30000
It is a resin. Specific examples thereof include polyester polyols, polyether polyols, polyurethane polyols, and polysiloxane polyols. Examples of polyester polyols include polybasic acids [(anhydrous) phthalic acid, terephthalic acid, dimethyl terephthalate, sebacic acid, azelaic acid, etc.] and glycols [ethylene glycol, polyethylene glycol, propylene glycol, neopentyl glycol, and the polyesters mentioned below. Condensed polyester polyols such as ether polyol, etc. and lactone polyester polyols obtained by ring-opening polymerization of ε-caprolactam can be suitably used. Examples of polyether polyols include polytetramethylene ether glycol obtained by cationic polymerization of glycols (ethylene glycol, propylene glycol, etc.) and alkylene oxides (ethylene oxide, propylene oxide, etc.) and tetrahydrofuran. It can be used suitably. As polyurethane polyols, for example, diisocyanates [hexamethylene diisocyanate, isophorone diisocyanate, (hydrogenated) xylylene diisocyanate, (
(hydrogenated) tolylene diisocyanate, (hydrogenated) diphenylmethane diisocyanate, etc.) so as to contain an average of two or more hydroxyl groups at the end of the main chain of the molecule and react them. As the polysiloxane polyol, for example, chemical formula 1:

0010

[Chemical formula 1]

(In formula 1, R1 and R6 are the same or different and are a C1-8 alkylene group or -(
R′-O-R″)q −, R2 , R3 , R4
, R5 are the same or different and represent monovalent hydrocarbon groups, and P represents an integer of 0 to 20. Further, R' and R'' are the same or different and represent a C1-8 alkylene group, and q represents an integer of 1-10. Examples of the alkylene include -CH2 -, -C2 H4 -, -C3 H6
-, -C4 H8 -, -C6 H12-, -C8 H
16- and the like. Examples of hydrocarbon groups include C
Examples include a 1-8 alkyl group, a C5-8 cycloalkyl group, an aryl group, and an aralkyl group. ) can be preferably used.

The polyisocyanate compound used in combination with the polyol resin has an average molecular weight of 400 or more and has an average of two or more isocyanate groups in one molecule. Specifically, for example, a polyol component such as the polyester polyol, polyether polyol, polyurethane polyol, polysiloxane polyol, or glycol is used as a raw material, and this and the diisocyanate are combined so that the molecular terminal contains an average of two isocyanate groups. Modified diisocyanate compounds obtained by blending and reacting can be suitably used. In addition to the above, there are also adducts of the diisocyanate with polyols such as glycerol trimethylolpropane and pentaerythritol, and those having three or more isocyanate groups in one molecule, such as trimers of the diisocyanate. can be used. Among the above, preferred are modified diisocyanate compounds, and further have an average molecular weight of 1000.
~30,000 is good.

The polyol resin and the polyisocyanate compound each have a hydroxyl group/isocyanate group ratio of about 0.
．． It is usually blended so that it becomes 8 to 1.2.

Mixture B of resin (I) is a mixture of acrylic resin and vinyl chloride/vinyl acetate resin. As the acrylic resin, thermoplastic acrylic resins conventionally used in acrylic resin paints (acrylic lacquers) can be used, such as Paraloid A-11, A-10, A-21, A-101, A-101, and A-10. B-50, same as left B-
67MT, same left C-10LV, same left F-10, same left NA
Acrylic polymers containing (meth)acrylic acid ester as a main monomer component, such as D-10 (trade name, manufactured by Rohm and Haas), can be suitably used. In addition, examples of vinyl chloride/vinyl acetate resin include Vinylite VY
NS, VYHH, VYHD, VYLF, VYNW, VA
GH, VAGD, VMCH, VMCC (trade name,
Copolymers containing vinyl chloride as a main component, such as those manufactured by Union Carbide Co., Ltd., can be suitably used.

[0015] The acrylic resin and the vinyl chloride/vinyl acetate resin have a total amount of about 50 to 80% by weight of the former,
A range of about 50 to 20% by weight of the latter is preferred. The former is about 5
If the former is less than 0% by weight or the latter is more than about 50% by weight, weather resistance, gasoline resistance, and abrasion resistance tend to be poor, whereas if the former is more than about 80% by weight or the latter is about 20% by weight. If it is less than % by weight, mechanical properties etc. tend to be poor, which is not preferable.

The polyurethane resin of resin (I) has a molecular weight of about 200 and has an average of two or more urethane bonds in one molecule.
Lacquer type resins ranging from 0 to 30,000 can be used. Specifically, a reaction product of the polyol resin and a polyisocyanate component such as the diisocyanate, a diisocyanate polymer, or an adduct of diisocyanate and polyol can be suitably used. These reactants are represented by the following general formula 2:

[0017]

[Chemical 2]

[In Chemical 2, A is a C2-12 divalent hydrocarbon group, a linear polyester bond (molecular weight approximately 100-30,000) derived from a linear polyester resin having hydroxyl groups at both ends, or a linear polyester bond (molecular weight approximately 100-30,000) at both ends. B is a linear polyether bond derived from a linear polyether resin having a hydroxyl group at both ends, or a linear polysiloxane bond derived from a linear polysiloxane resin having a hydroxyl group at both ends, and B is an isocyanate bond at both ends. It is a divalent hydrocarbon group derived from a polyisocyanate having a group, and K is an integer of 10 to 100. ].

Examples of the divalent hydrocarbon group include branched or straight-chain alkylene groups, substituted or terminally substituted phenylene groups, and the like.

[0020] As the colorant (II), color pigments, dyes,
Fluorescent pigments (dyes) etc. can be used. The above-mentioned pigment or dye can be appropriately selected and used from conventionally known pigments, but it is preferable to use a pigment from the viewpoint of weather resistance. The coloring pigments include, for example, inorganic pigments such as carbon black and titanium oxide; organic pigments such as quinacridone-based pigments such as quinacridone red, azo-based pigments such as pigment red, phthalocyanine-based pigments such as phthalocyanine blue and phthalocyanine green; and aluminum. ,
Examples include scaly metallic powders such as copper, mica-like iron oxide, bronze, and stainless steel. The blending ratio of coloring pigments or dyes varies depending on their properties such as hiding power, specific gravity, etc., but resin solids content 1
00 parts by weight, usually about 0.5 to 300 parts by weight,
It is preferably blended in a proportion of about 3 to 150 parts by weight. In addition to the above, extender pigments such as barium sulfate, calcium carbonate, clay, zinc white, and silica can also be blended together.

[0021] The organic solvent (III) is an inert solvent that can dissolve or disperse the mixture A and mixture B and does not react with the functional group (isocyanate group, hydroxyl group) when the mixture has a functional group. organic solvents are used. Furthermore, organic solvents having a boiling point of 220° C. or lower are preferred. Examples of the inert organic solvent include aliphatic hydrocarbons (pentane, hexane, heptane, etc.), aromatic hydrocarbons (toluene, xylene, etc.), and ethers (
Ethylene glycol diethyl ether, etc.), ketone types (methyl ethyl ketone, methyl isobutyl ketone, acetone, etc.), and ester types (ethyl acetate, butyl acetate, etc.) can be suitably used. Furthermore, when using the mixture C and the polyurethane resin, alcohol-based resins (isopropyl alcohol, butyl alcohol, cellosolve, diethylene glycol monoethyl ether, etc.) can also be used in addition to the above.

As shown in FIG. 3, the colored base film used in the method of the present invention includes a colored coating layer 10, a base film 9,
It is formed by sequentially laminating an adhesive layer 8 and a release sheet 7. The method for producing the colored base film is not particularly limited, but preferably, for example, a laminated film having a base film 9, an adhesive layer 8, and a release sheet 7 is used, and on the surface of the base film 9 of the laminated film, The colored coating composition is coated by a coating method such as roll coating, spraying, knife coating, or curtain flow coating, or by a printing method such as silk screen or gravure, to a dry film thickness of about 30 to 100 μm, preferably about 40 to 80 μm. It can be formed by coating or printing and drying.

In addition to the above method for producing a colored base film, it is also possible to coat or print a colored coating composition on one side of the base film 9 and dry it to form a colored coating layer 10 on the base film 9. It can also be manufactured by forming the adhesive layer 8 on the surface of the base film 9 opposite to the colored coating layer 10 formed on the film 9, and then laminating the release sheet 7. The coating or printing can be carried out by the same means as described above. I also think that the film thickness should be about the same as above.

[0024] Among the above-mentioned painting methods and printing methods, it is preferable to use coating methods such as roll coating, knife coating, and curtain flow coating because they yield vacuum-formed products without defects such as foaming. .

[0025]Although drying varies depending on the type of resin composition and the type or content of organic solvent, it is usually at room temperature to about 18
This can be carried out at 0° C. for about 10 minutes to about 2 days.

As the base film 9, a conventionally known thermoplastic plastic film can be used as long as it softens when heated and does not have any abnormalities such as cracks, cracks, or breaks during vacuum forming. Specifically, polyvinyl chloride,
Examples include films such as ABS, polyester, and polyurethane. The thickness of the film is usually 0.1 to 0.5.
Those in the mm range are used.

The adhesive layer 8 is provided to adhere the base film 9 or the colored coating layer 10 and the member 3 so that the vacuum forming film does not easily peel off. As the adhesive forming the adhesive layer 8, a heat-sensitive or pressure-sensitive adhesive is usually used, and adhesives mainly composed of resins such as ethylene-vinyl acetate resin, acrylic resin, vinyl resin, rubber, etc. Agents can be mentioned. The adhesive layer 8 usually has a thickness in the range of about 20 to 100 μm, although it is not particularly limited.

The release sheet 7 may be a sheet of paper, plastic, etc. treated with a release agent such as silicone or wax.

A clear layer provided by lamination on the surface of the colored coating layer 10 of the colored base film is laminated with a process paper 12, a clear film 11, and hot melt adhesive as needed, as shown in FIG. agent layer 13
It is formed by sequentially stacking. The processing paper 12 is removed before or after lamination with the colored base film.

The clear layer can be obtained by applying a clear composition obtained by removing the colorant (II) from the colored coating composition to the surface of the processing paper 11 made of, for example, polyethylene terephthalate, and drying the composition. can. Drying may be carried out under the same drying conditions as the colored coating composition. Further, the dry film thickness of the clear film 11 is about 40 to 200
μm, preferably in the range of about 50 to 100 μm.

Providing the hot melt adhesive layer 13 on one side of the clear film 11 has the advantage that the adhesion between the colored coating layer 10 and the clear film 11 can be improved. The thickness of the adhesive layer 13 is usually about 2 to 10 μm.
A range of is preferred.

The above-mentioned hot melt adhesive is not particularly limited as long as it melts with heat and exhibits adhesive properties, and can be appropriately selected from conventional adhesives. Among these, thermoplastic hot melt adhesives are preferred. For example, the trademark name of commercially available adhesives is Denka Vinyl 10.
00 (manufactured by Asahi Denka Co., Ltd.), Nimelt (manufactured by Nitto Kasei Chemical Industry Co., Ltd.), NUC-EVA (manufactured by Nippon Unicar Co., Ltd.), Aronmelt PES (manufactured by Toagosei Chemical Industry Co., Ltd.)
, Tomide (manufactured by Fuji Kasei Kogyo Co., Ltd.), and Byron (manufactured by Toyobo Co., Ltd.) are suitable examples. The thickness of the adhesive is usually about 0.5 to 10 μm, preferably about 2 to 5 μm.

The colored base film and clear film described above have the colored coating layer 10 side of the colored base film and the clear film 11 of the clear layer, or the adhesive layer 13 side if the clear layer has an adhesive layer 13. They are laminated while heating so that they overlap. Lamination can usually be carried out using two heated rolls. Further, heating is usually performed at a temperature in the range of about 40°C to 160°C.

The colored film obtained by the method of the present invention is shown in FIG.
As shown, a release sheet 7, an adhesive layer 8, a base film 9, a colored coating layer 10, a hot melt adhesive layer 13 if necessary, a clear layer 11, and a process paper 1 if necessary.
2 are sequentially laminated.

The method of vacuum forming a member using the colored film obtained by the method of the present invention as a film for vacuum forming is not particularly limited and can be carried out by any conventionally known method. Specifically, this can be carried out by the method shown in FIGS. 1 and 2 above. Furthermore, members made of various materials can be used. Specific examples include plastics such as polyurethane, polyamide, reinforced plastics, phenol resins, polyvinyl chloride, and polyethylene, wood, and metals.

[0036]

[Operation and Effects of the Invention] Since the colored film obtained by the method of the present invention has the above-described composition, the elongation rate of the film is lower even when the film is heated to the vacuum forming temperature compared to the conventional film. Since there is no deterioration, a vacuum-formed product with excellent appearance and no defects such as cracks, breaks, or foaming can be obtained. In addition, since the colored coating composition and the base film have good adhesion, they do not peel off during vacuum molding or during the long-term durability of the vacuum molded product.

[0037]

[Examples] The present invention will be explained in detail below with reference to Examples and Comparative Examples. "Part" and "%" in Examples and Comparative Examples
is based on weight.

Resin ■ Solution: 28. of Paraloid A-11.
16 parts of vinylite VYNS and 7.04 parts of vinylite VYNS were dissolved in an organic solvent of 42.24 parts of methyl ethyl ketone, 5.63 parts of xylene, and 22.53 parts of methyl isobutyl ketone to obtain a resin solution.

Resin ■ Solution: 1000 parts of polytetramethylene glycol (molecular weight 2000) and 80 parts of 1,6-hexane diisocyanate were mixed with 200 parts of N-methylpyrrolidone.
The mixture was reacted at 80 DEG C. and further diluted with 880 parts of ethyl acetate to obtain a resin solution of a polyether urethane lacquer having a terminal hydroxyl group with a solid content of 50% and a resin molecular weight of 45,000.

Resin (1) Solution: 133 parts of terephthalic acid and 104 parts of neopentyl glycol were subjected to a dehydration condensation reaction at 230°C to obtain a polyester having a molecular weight of 1000 and containing terminal hydroxyl groups. Next, 42 parts of N-methylpyrrolidone,
The resin solution was dissolved in 168 parts of ethyl acetate to obtain a resin solution with a solid content of 50%.

Resin (1) solution: 2,000 parts of the resin (1) solution and 202 parts of 1,6-hexamethylene diisocyanate were reacted at 80°C to obtain a polyester urethane having a molecular weight of 6,000 and containing terminal isocyanate groups. Next, 202 parts of ethyl acetate was added to this to obtain a resin solution with a solid content of 50%.

Resin (1) solution: 600 parts of the resin (1) solution and 13.4 parts of trimethylolpropane were reacted at 70°C to obtain a polyester urethane having a molecular weight of 6,000 and each having an average of two hydroxyl groups at the molecular ends. Next, this was dissolved in 13.5 parts of N-methylpyrrolidone to give a solid content of 50%.
A resin ■ solution was obtained.

Resin (1) solution: 1,000 parts of the resin (1) solution and 76 parts of 1,6-hexamethylene diisocyanate were mixed into 8
The reaction was carried out at 0°C to obtain a polyester urethane having a molecular weight of 12,000 and a hydroxyl group at the terminal. Next, this product was dissolved in 76 parts of N-methylpyrrolidone to obtain a resin solution with a solid content of 50%.

Resin ■ solution: 1152 parts of the resin ■ solution and 10 parts of Takenate P-165N (trade name, Takeda Pharmaceutical Co., Ltd., aliphatic polyisocyanate) were reacted to give a molecular weight of 12,000 and an average amount at the molecular ends. A polyester urethane having two isocyanate groups was obtained. This product was dissolved in 10 parts of N-methylpyrrolidone to obtain a resin solution with a solid content of 50%.

Metallic compositions a to f Add Alpaste 52-402 (trade name, product of Toyo Aluminum Co., Ltd., scale-like aluminum powder) to the resin solution shown in Table 1 at a solid content of 100 parts of resin solid content. A metallic composition having a solid content of 54% was obtained by blending 20 parts.

Clear composition g to i Tinuvin-900 (Ciba Geigy Co., Ltd., trade name, ultraviolet absorber) and LS-292 were added to the resin solution shown in Table 1.
(Sankyo Co., Ltd., trade name, light stabilizer) were added in an amount of 0.5 parts each to 100 parts of resin to obtain a clear composition.

Examples 1 to 7 Method for producing colored base film: Base film (thickness 250 μm, polyvinyl chloride film (A) or ABS
Metallic compositions a to f were applied to the other side of the film (B), in which an acrylic adhesive layer and a silicone-treated release sheet were sequentially laminated on one side, to a dry film thickness of 40 μm. The film was coated with a roll coater and then dried at 40° C. for 2 hours to obtain a colored base film in which a releasable sheet, an adhesive layer, a base film, and a colored coating layer were laminated in this order.

Method for producing clear layer: Clear compositions g to l were coated on a polyethylene terephthalate process paper using a roll coater to a dry film thickness of 80 μm, and then dried at 80° C. for 30 minutes. Furthermore, Aronmelt PES (Toagosei Kagaku Kogyo Co., Ltd., trade name, hot melt adhesive) is applied on top of the formed clear layer using a roll coater to a dry film thickness of 2 μm, dried, and processed paper.
A clear layer was obtained by sequentially laminating a clear film and an adhesive layer.

The colored base film and clear layer had a good appearance with few defects such as foaming.

[0050] Manufacturing method of colored film: Laminate at 100°C with two heated rolls so that the colored coating layer of the colored base film obtained by the above method is in contact with the adhesive layer of the clear layer obtained by the above method. Then, the processed paper was peeled off from the clear layer to obtain a colored film in which a release sheet, an adhesive layer, a base film, a colored coating layer, an adhesive layer, and a clear layer were sequentially laminated. Further, as the metallic composition for forming the colored coating layer and the clear composition for forming the clear layer, those listed in Table 2 were used.

Next, after peeling off the release sheet layer from the colored film obtained above, this film was molded into automotive parts (
A conical steel material with a depth of 7 cm and a diameter of 15 cm was vacuum formed. When the member was vacuum formed, the film was processed with a maximum elongation of 200% and a minimum contraction of 10% (reduction). (0% for those that do not grow at all, 100% for those that grow twice as much)
.

Comparative Example 1 The following ( *1) The metallic composition was spray-coated to a dry film thickness of 40 μm, and then heated at 80°C.
It dried in 30 minutes. Next, from above this one, write the following (*2
) was spray-coated to a dry film thickness of 60 .mu.m, followed by drying at 80.degree. C. for 30 minutes to obtain a colored film of Comparative Example 1. The colored film developed some foaming.

(*1) As a metallic composition, Rethane PG80 Metallic Base (trade name, Kansai Paint (trade name)
Co., Ltd. product, acrylic polyol)/rethane PG curing agent (trade name, Kansai Paint Co., Ltd. product, polyisocyanate) are blended so that the NCO/OH is approximately 1.0.
It was diluted to spray viscosity with a diluting solvent.

(*2) As a clear composition, Letane PG80 Quartz Clear Z (trade name, Kansai Paint (trade name)
Co., Ltd.'s acrylic polyol/rethane curing agent was blended so that the NCO/OH ratio was approximately 1.0, and the mixture was diluted with a diluting solvent to a spray viscosity.

[0055]

[Table 1]

[0056]

[Table 2]

(*3) The appearance of the films after molding in Examples and Comparative Examples is free from abnormalities such as reduced gloss, cracking, cracking, and peeling in the most stretched and most contracted parts compared to the films before molding. The presence or absence was evaluated.

FIG. 6 also shows the temperature of the film (60 μm) of the clear composition used in Example 1, the cured film (60 μm) of the clear composition used in Comparative Example 1, and the temperature of each individual film of the base film ( ℃) - elongation rate (%) (measured using an autograph manufactured by Shimadzu Corporation at a tensile speed of 300 mm/min). Vacuum forming temperature (100℃ for base film A, 130℃ for base film B)
It was carried out at ℃. However, the films used here were independent films without an adhesive or a release sheet. )
The elongation rates in Example 1 were 880% at 100°C and 880% at 130°C, whereas the elongation rates were 590% for base film A and 370% for base film B, respectively.
Both have a higher elongation rate and better vacuum formability than the base film. Furthermore, all of the films of Comparative Example 1 had a lower elongation rate than the base film and were inferior in vacuum formability.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a method of applying the colored film of the present invention by vacuum forming.

FIG. 2 is an explanatory diagram showing a method of applying the colored film of the present invention by vacuum forming.

FIG. 3 is a sectional view of a colored base sheet used in the method of the present invention.

FIG. 4 is a cross-sectional view for explaining the formation of a clear layer used in the method of the present invention.

FIG. 5 is a cross-sectional view of a colored film obtained by the method of the present invention.

FIG. 6 is an explanatory diagram showing the effects of the present invention.

[Explanation of symbols]

1 Heater 2 Colored film 3. Components 4 Mount 5 Vacuum suction port 6 Vacuum equipment 7 Release sheet 8 Adhesive layer 9 Base film 10 Colored coating layer 11 Clear film 12 Process paper 13 Adhesive layer

Claims (1)

[Claims] Claim 1: A mixture of a polyol resin with an average molecular weight of 1,000 to 30,000 having a hydroxyl group at the end of the main chain and a crosslinking agent of a polyisocyanate compound with an average molecular weight of 400 or more, a mixture of an acrylic resin and a vinyl chloride/vinyl acetate resin. and a colored coating layer and a base film formed from a colored coating composition containing as essential components at least one resin composition (I) selected from polyurethane resins, a colorant (II) and an organic solvent (III), A method for producing a colored film, which comprises forming a colored base film by sequentially laminating an adhesive layer and a release sheet, and forming a clear layer on the surface of the colored coating layer by lamination to obtain a colored film. .