JP2003053877A - Colored film, colored process paper and manufacturing method of colored film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a colored film made free from a disadvantage such as color fading by forming a pliable elastic resin layer on a colored layer, and also to provide colored process paper suitable for the use for manufacturing the colored film and a manufacturing method of the colored film. SOLUTION: The colored film 11 has a constitution wherein at least a transparent protective layer 2, the colored layer 3, the elastic resin layer 4 and an adhesive layer 5 are formed in this sequence. The colored process paper has a constitution wherein at least process paper, the colored layer and the elastic resin layer are formed in this sequence. In these cases, the elastic resin layer 4 is preferably constituted of a polyester elastomer. As for the manufacturing method of the colored film, the colored layer or the transparent protective layer and the colored layer are applied on the process paper and then the elastic resin layer is extruded thereon. Moreover, the adhesive layer and a release film are laminated thereon in this sequence and the process paper is peeled off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored film such as a marking film, a coloring process paper used for manufacturing the colored film, and a method for manufacturing the colored film. A colored film such as a marking film that eliminates defects such as color loss by forming a resin layer on a colored layer, a colored process paper that is preferably used for manufacturing the colored film, and a method for manufacturing the colored film. is there.

[0002]

2. Description of the Related Art A colored film such as a marking film has a colored layer having one or more colors or patterns formed on one side of a soft vinyl chloride resin film and an adhesive layer formed on the other side. , Pasted as it is or pasted as cut characters, for example, automobiles, motorcycles and other vehicles, decorations on the body and window glass of ships, airplanes, advertisements or decorations at convenience stores, gas stations, windows Display decorations, etc.
Widely used in various fields. Since such a colored film is usually produced by forming a soft vinyl chloride resin into a film by a calendar method or the like, the formation of the colored layer and the printability were easy.

However, in recent years, it has been required to use a resin material other than vinyl chloride resin in a colored film such as a marking film due to environmental problems. Therefore, a soft polyolefin material is used after being formed into a film. Is being considered. In the case of producing a colored film using such a polyolefin-based material, a method is usually employed in which the polyolefin-based material is formed into a film by T-die extrusion and a colored layer is formed thereon.

[0004]

However, a film made of a soft polyolefin-based material is roll-to-rolled.
If you try to form a colored layer by highly productive gravure printing while transporting with rolls, tension in the process during transport causes the film to stretch, causing color loss or wrinkles in the colored layer formed on the film. The problem of being easy has arisen.

For this reason, conventionally, there has been a manufacturing limitation that the colored layer must be formed by screen printing or the like in which the tension in the process during manufacturing is small.
Further, since it is necessary to form the colored layer on the flexible film so as not to cause color loss, there is a limitation that the colored layer must be formed thick. Further, a batch type printing means such as screen printing has a problem that the production efficiency of the whole is inferior because the process efficiency of the colored layer is reduced.

The present invention has been made to solve these problems, and an object thereof is to form a flexible elastic resin layer on a colored layer so that coloring such as color loss does not occur. The present invention provides a film, a colored process paper suitably used for manufacturing the colored film, and a method for manufacturing the colored film.

[0007]

The colored film described in claim 1 is characterized in that at least a transparent protective layer, a colored layer, an elastic resin layer and an adhesive layer are formed in this order.

According to the present invention, since the colored layer is formed on the transparent protective layer, not on the elastic resin layer having flexibility, the formed colored layer is caused by elongation of the elastic resin layer or the like. Problems such as missing colors and wrinkles do not occur. As a result, the colored layer can be provided with a desired thickness without any problem, and a high-quality colored film can be provided.

The invention according to claim 2 is characterized in that, in the colored film according to claim 1, the elastic resin layer is made of a polyester elastomer.

According to the present invention, since the elastic resin layer is made of the polyester elastomer, it is possible to obtain a colored film having excellent conformability to the shape of the adherend, and also in consideration of environmental problems. It is possible to provide a colored film.

The colored process paper according to claim 3 is characterized in that at least the process paper, the coloring layer and the elastic resin layer are formed in this order.

Since the present invention is a colored process paper in which a colored layer is formed on a process paper, and an elastic resin layer is further formed, the formed colored layer has no defects such as color loss and wrinkles, and The elastic resin layer is formed on the colored layer. As a result, this colored paper can be preferably used for producing a high quality colored film or the like.

The invention described in claim 4 is characterized in that, in the colored process paper according to claim 3, a transparent protective layer is provided between the process paper and the colored layer.

According to this invention, since the transparent protective layer is provided between the process paper and the coloring layer, when the process paper is subsequently removed, the transparent protective layer protects the coloring layer. You can As a result, this colored paper can be suitably used for producing a high-quality colored film having excellent weather resistance.

A fifth aspect of the present invention is characterized in that, in the coloring process paper according to the third or fourth aspect, the elastic resin layer is made of a polyester elastomer.

Since the coloring process paper of the present invention is used to form an elastic resin layer made of a polyester elastomer, a colored film or the like produced by using the coloring process paper has a flexible elastic resin layer. It has a colored layer that does not have defects such as color loss and wrinkles due to elongation of the film, and can be a colored film that has excellent followability to the shape of the adherend, and also considers environmental issues It is possible to provide a high quality colored film.

According to a sixth aspect of the present invention, in the method for producing a colored film, a colored layer is coated on a process paper, an elastic resin layer is extruded on the colored layer, and an adhesive layer and a release film are laminated in this order. It is characterized by peeling the process paper. Further, in the method for producing a colored film according to claim 7, after coating a transparent protective layer and a colored layer on a process paper, an elastic resin layer is extruded thereon, and an adhesive layer and a release film are laminated in this order. The process paper is then peeled off.

According to these inventions, since the elastic resin layer is formed on the process paper after the colored layer or the colored layer and the transparent protective layer are formed in advance, the elastic resin which is inferior in printability, such as a polyester elastomer, is used. Even materials can be easily extruded.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The colored film, colored process paper, and method for manufacturing a colored film of the present invention will be sequentially described below with reference to the drawings.

The colored film 11 of the present invention comprises at least a transparent protective layer 2, a colored layer 3, an elastic resin layer 4 and an adhesive layer 5 which are formed in this order. Specifically, FIG.
As illustrated in FIG. 1, the transparent protective layer 2, the colored layer 3 formed on the transparent protective layer 2, the elastic resin layer 4 formed on the colored layer 3, and the elastic resin layer 4 are formed. The adhesive layer 5 is included. The characteristic of the colored layer 3 is that the colored layer 3 is formed not on the elastic resin layer 4 having flexibility but on the transparent protective layer 2.
Does not cause problems such as color loss and wrinkles due to the elongation of the elastic resin layer 4. As a result, the colored layer 4 can be provided with a desired thickness without any problem, and the colored film 11 of good quality can be provided. In addition,
In FIG. 1, the release film 6 is peeled off when the colored film 11 is attached to the adherend.

(Transparent Protective Layer 2) The transparent protective layer 2 is located on the outermost surface of the colored film 11 and plays a role of maintaining its weather resistance after the colored film 11 is attached to the adherend. It is a thing. The transparent protective layer 2 is usually preferably formed so as to be located on the outermost surface of the colored film 11, but it is not necessarily an essential layer and is omitted for applications where weather resistance is not required. You can also do it.

As a material for forming the transparent protective layer 2, a thermosetting or ionizing radiation curable resin such as an acrylic resin, an epoxy resin, a urethane resin, a polyester resin or an aminoalkyd resin can be preferably mentioned. . The transparent protective layer coating liquid containing such a resin,
As the cross-linking agent, epoxy resin, amino resin, phenol resin or the like can be contained. Incidentally, the transparent protective layer coating liquid, ultraviolet absorbers, ultraviolet shielding agents, light stabilizers, colorants, heat stabilizers, antistatic agents, plasticizers, curing agents,
It is also possible to contain additives having various actions such as a lubricant. In addition, a side chain of a polymerizable polymer exemplified in JP-A-2000-128940 as represented by the general formulas (1) to (3) contains an ultraviolet absorbing monomer also exemplified in JP-A-2000-128940. It is more preferable to use a resin because the resin has excellent ultraviolet absorbing ability for a long period of time and the ultraviolet absorber does not bleed out.

The transparent protective layer 2 is formed by applying a coating liquid for a transparent protective layer by coating or printing, and then curing it. As the coating method, various known methods, for example, roll coating, curtain flow coating, wire bar coating,
Reverse coat, gravure coat, gravure reverse coat, micro gravure coat, air knife coat,
Methods such as kiss coating, blade coating, smooth coating, comma coating, slide coating, spray coating, pouring coating, and brush coating can be used. Also,
As the printing method, it is possible to use various known methods such as gravure, letterpress, letterpress printing such as flexo, lithographic offset printing, lithographic printing such as dilitho printing, stencil printing such as silk screen printing, electrostatic printing, ink jet printing and the like. .

The transparent protective layer 2 formed in this manner is excellent in gloss retention, color retention, scratch resistance, stain resistance, water resistance, boiling water resistance, and chemical resistance, and is therefore preferable as a weather resistance imparting layer. . Although the thickness of the transparent protective layer 2 varies depending on the type of resin material to be formed, it is usually preferable to set the thickness to about 5 to 100 μm.

(Coloring Layer 3) The coloring layer 3 is a layer having one or more colors or patterns. This colored layer 3 is a solid layer over the entire surface,
It may be in any form of a partial solid layer, a pattern layer, and a multicolor layer of two or more colors, and may have a pattern such as a painting, a logo, characters, symbols, and figures formed thereon. The colored layer 3 preferably has a solid layer for hiding the background of the adherend, and various patterns are preferably laminated on the surface side of the solid layer. In addition,
The solid layer can be omitted when the pattern itself also functions as a solid layer or when the elastic resin layer 4 described later has a concealing property. Of course, both may be used together, in which case the concealing effect is further improved. Particularly, in the colored film 11 of the present invention, as described later, the colored layer 3 is formed on the process paper 12, so that a plurality of colors are overcoated and the colored layer 3 having a complicated color or pattern is easily formed. There is an advantage that can be done. Further, since the in-process tension in the process of forming the colored layer 3 is absorbed by the process paper 12, the colored layer 3 is unlikely to be elongated due to the in-process tension, and thus the formed colored layer 3 is formed. There is also an advantage that color loss, wrinkles, cracks, etc. do not occur.

As a material for forming the colored layer 3, a material obtained by kneading a vehicle with a pigment or dye colorant, a plasticizer, a stabilizer, other additives, a solvent or a diluent is used. As the vehicle, for example, ethyl cellulose, nitrocellulose, ethyl hydroxyethyl cellulose, cellulose acetate propionate, cellulose acetate butyrate, cellulose derivatives such as cellulose acetate, polystyrene, styrene resin such as poly α-methylstyrene and styrene copolymer resin, polymethacryl Methyl acid, polyethyl methacrylate, polyethyl acrylate,
Acrylic acid or methacrylic resin homo- or copolymer resin such as butyl polyacrylate, rosin, rosin-modified maleic acid resin, rosin-modified phenol resin, rosin ester resin such as polymerized rosin, polyvinyl chloride, polyvinyl acetate, vinyl chloride -Vinyl acetate copolymer, vinyl polymers such as polyvinyl butyral, coumarone resin, vinyltoluene resin, polyamide resin, polyester resin,
One or more selected from natural or synthetic thermoplastic resins such as polyurethane resin and polycarbonate resin are used. In addition to selecting a resin suitable for elongation of the resin itself used for the vehicle, the elongation rate of the vehicle can be adjusted by a plasticizer. Ester is often used as the plasticizer to be added, especially dibasic acid,
Esters of higher fatty acids, aromatic acids, phosphoric acid, etc. and esters of glycerin which is a polyhydric alcohol are often used. Among the vehicle resins, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, urethane resin and the like are particularly suitable because of the flexibility of resin design and the elongation suitability of the resin itself. Further, as the plasticizer, dibutyl phthalate, tricresyl phosphate, dioctyl phthalate and the like are particularly suitable. As the color pigment, a commonly used organic or inorganic pigment can be used. Among these coloring pigments, as yellow pigments, monoazo, disazo, azo pigments such as polyazo, organic pigments such as isoindolinone, yellow lead, yellow iron oxide, cadmium yellow, titanium yellow, inorganic pigments such as antimony yellow. Can be used. As the red pigment, azo pigments such as monoazo, disazo and polyazo, organic pigments such as quinacridone, and inorganic pigments such as Benji, vermilion, cadmium red and chrome vermilion can be used.
As the blue pigment, organic pigments such as phthalocyanine blue and indanthrene blue, and inorganic pigments such as dark blue, ultramarine blue and cobalt blue can be used. As the black pigment, an organic pigment such as aniline black or an inorganic pigment such as carbon black can be used. As the white pigment, inorganic pigments such as titanium dioxide, zinc oxide, antimony trioxide and the like can be used.

In the present invention, a white pigment and / or
Alternatively, by forming the colored layer 3 by combining the solid layer containing the black pigment and the colored pattern layer, the colored film 11 can be made to have a concealing property, and the color and the pattern of the colored layer 3 can be further emphasized. be able to. The colored layer 3
The coating liquid for the colored layer for forming a
It is also possible to contain additives having various actions such as an ultraviolet shielding agent, a light stabilizer, a colorant, a heat stabilizer, an antistatic agent, a plasticizer, a curing agent and a lubricant. The material for forming the colored layer 3 is preferably a resin having an appropriate elongation property that can follow the expansion and contraction of the elastic resin layer 4 when the colored film 11 is attached to the adherend.

The colored layer 3 is formed by applying a coating liquid for a colored layer by coating or printing and then curing it. As a coating method, various known methods, for example, roll coating,
Curtain flow coat, wire bar coat, reverse coat, gravure coat, gravure reverse coat, micro gravure coat, air knife coat, kiss coat, blade coat, smooth coat, comma coat,
Methods such as slide coating, spray coating, pouring coating, and brush coating can be used. Further, as the printing method, it is possible to use various known methods such as gravure, letterpress, relief printing such as flexo, lithographic offset, lithographic printing such as dilitho printing, stencil printing such as silk screen, electrostatic printing, ink jet printing and the like. You can

The colored layer 3 thus formed is extremely easy to form because it is formed on the process paper, and it is not formed on the flexible elastic resin layer as in the conventional case, so that the problem of color breakage and the conventional printing may occur. It has the advantage of not being difficult to do.

(Elastic Resin Layer 4) The elastic resin layer 4 acts as a base material for the colored film 11. An adhesive layer 5 is formed on the adherend side of the elastic resin layer 4. On the opposite side, the colored layer 3 and the transparent protective layer 2 are sequentially provided on the elastic resin layer 4 to give the colored film 11 decorative properties.

The elastic resin layer 4 is preferably made of a flexible resin, and the followability with respect to the adherend can be further improved. The flexibility of the elastic resin layer 4 is JIS
11-42MP in tensile breaking strength according to K6301
a, especially 11 to 29 MPa, preferably 80 to 1100%, particularly 300 to 1100% in tensile elongation at break
Is preferred. The elastic resin layer 4 having the properties within this range is rich in flexibility and has excellent followability to the shape of the adherend.

The material for forming the elastic resin layer 4 is preferably the above-mentioned olefin elastomer having flexibility, and specifically, polypropylene elastomer, polyethylene elastomer, polyester elastomer and the like. It is preferable. In particular, the density (A
STM D297): 1.17 to 1.41 g / cm ³ ,
MFR (ASTM D1238) 18-64g / min
(230 ° C.), melting point (DSC): 210 to 225 ° C., flexural modulus (ASTM D790): 85 to 850 MPa
The polyester elastomer is excellent in flexibility and has a strength three times as high as that of the vinyl chloride resin, so that there is also an advantage that the thickness of the elastic resin layer can be reduced to one-third that of the conventional one. Since the elastic resin layer 4 formed of such a resin material does not use a vinyl chloride resin as in the prior art, it does not adversely affect the environment when it is incinerated.

The elastic resin layer coating liquid for forming the elastic resin layer 4 contains, if necessary, an ultraviolet absorber, an ultraviolet shielding agent, a light stabilizer, a colorant, a heat stabilizer, an antistatic agent, Additives having various actions such as a plasticizer, a curing agent, and a lubricant can also be contained.

The elastic resin layer 4 is formed by T-die extrusion on the colored layer constituting the coloring step paper described later, or by coating the elastic resin layer coating liquid by various coating methods and drying. Can be formed. The thickness of the elastic resin layer 4 varies depending on the type of resin material to be formed, but is usually 5 to 5.
It is preferably about 300 μm.

The elastic resin layer 4 preferably has a concealing effect. The elastic resin layer 4 having a concealing effect can make the above-mentioned colored layer 3 more prominent. When the elastic resin layer 4 does not have the hiding effect but only the solid layer has the hiding effect, the hiding effect may be insufficient.
The reason is that, for example, when a solid layer is formed by combining a plurality of pigments so that a gray solid layer is formed by mixing white and black pigments, the possibility of color separation increases. Is. In this respect, since the elastic resin layer 4 is formed by the elastic resin layer coating liquid in which a plurality of pigments are mixed and toned in advance, there is no problem of color separation, and the gray color containing white and black pigments is used. By adjusting the color of the elastic resin layer coating liquid that can form the elastic resin layer 4, the elastic resin layer coating liquid can be made versatile. Then, by forming the elastic resin layer 4 with the elastic resin layer coating liquid,
The coloring when viewed from the surface does not become dark, and the hiding property is good,
There is an advantage.

(Adhesive Layer 5) The adhesive layer 5 is the colored film 1
1 acts to adhere to the adherend. Examples of materials for forming the adhesive layer include adhesives such as acrylic adhesives, urethane adhesives, rubber adhesives, and silicone adhesives.

The material and the thickness thereof are selected according to the material and surface condition of the adherend. For example, the adhesive strength is usually 50 to 5000 g / 25 mm width (JIS Z 02
The adhesive of the adhesive tape / adhesive sheet test method 37) can be preferably used, and more preferably 50 to 1
500 g / 25 mm width, more preferably 500-900
The width is g / 25 mm. A pressure-sensitive adhesive having an adhesive strength of 1500 g / 25 mm width or more can impart a strong adhesive property to an adherend as a permanent adhesive type. Further, by setting the adhesive strength in the range of 50 to 1500 g / 25 mm width, the colored film such as the used marking film can be used as a colored film without unnecessary adhesive remaining on the surface of the adherend. It is possible to provide removability that allows easy peeling without requiring a peeling force that exceeds the breaking strength of itself. The thickness of the adhesive layer 5 is usually preferably 5 to 200 μm. A release film 6 described below can be further laminated on the adhesive layer 5.

(Release Film 6) The release film 6 is peeled off when the colored film 11 is attached to an adherend, and is provided as necessary.

As the release film 6, a resin film of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin, polyvinyl chloride resin or the like, metal foil such as aluminum foil or copper foil, What is usually used as a release film such as glassine paper, coated paper, cellulosic film such as cellophane, or a composite of the above films can be used.

The releasability of the release film 6 can be improved by forming a release layer on the release film. In this case, the release layer may or may not be present. The release layer is released together with the release film 6 when the release film 6 is released.

Materials for the release layer include melamine resin-based release agents, silicone resin-based release agents, fluororesin-based release agents,
It is possible to use a cellulose derivative-based release agent, a urea resin-based release agent, a polyolefin resin-based release agent, a paraffin-based release agent, and a composite release agent of these. Examples of the method for forming the release layer include a coating method such as a roll coating method and a spray coating method, and a printing method such as a gravure printing method and a screen printing method.

The release layer is a layer for releasing the release film 6. Examples of the material of the release layer include a material composed of a thermoplastic resin such as an acrylic resin and polyethylene wax, an electron beam curable resin or an ultraviolet curable resin. As the electron beam curable resin,
There is a composition in which a reactive diluent is mixed with a prepolymer or oligomer composition having a polymerizable double bond or a prepolymer or oligomer composition having an epoxy group. As the UV curable resin, a composition of a prepolymer or oligomer having a polymerizable double bond, or a composition of a prepolymer or oligomer having an epoxy group, mixed with a reactive diluent and a photopolymerization initiator There is. Examples of the method for forming the release layer include a coating method such as a roll coating method and a spray coating method, and a printing method such as a gravure printing method and a screen printing method.

(Coloring Film 11) The coloring film 11 of the present invention, as shown in FIG.
The coloring layer 3, the elastic resin layer 4, and the adhesive layer 5 are laminated in this order. Such colored film 11
Is a very good-quality colored film that has a colored layer 3 that is free from defects such as color loss and an elastic resin layer 4 that has excellent conformability to the adherend, and that takes environmental issues into consideration.

For the formed colored film 11,
Post-processing that is usually performed can be performed depending on the application. For example, for the purpose of further improving weather resistance, a transparent film having an ultraviolet blocking effect may be laminated on the outermost layer of the colored film 11 or a fluorine-containing resin coating material may be coated. In particular, it is preferable to provide a layer containing a fluorine-containing compound because the weather resistance, antifouling property and abrasion resistance are improved. As the fluorine-containing compound, a graft polymer in which a side chain of an acrylic resin is arranged on the main chain of a fluororesin, a copolymer of a vinyl monomer containing a polyfluoro group and another vinyl monomer, or the like can be preferably used. In addition, it can be processed into a required form by cutting, silk screen printing, etc.
The outermost layer may be provided with another heat-adhesive resin layer, and characters and / or patterns may be applied by patterning means such as a heat-sensitive transfer recording method in order to improve design.

(Coloring process paper 21, 31) Coloring process paper 2
As shown in FIGS. 2 and 3, reference numerals 1 and 31 are preferably used for forming the elastic resin layer 4 described above, and the process paper 12 and the colored layer 3 formed on the process paper 12.
Contains at least. Further, in the present invention,
The colored process paper also includes a structure in which at least the process paper 12, the colored layer 3, and the elastic resin layer 4 are formed in this order.

Since the colored layer 3 in the colored process papers 21 and 31 is formed on the process paper, the colored layer 3 can be easily provided with a desired thickness without trouble such as color loss. Furthermore, since the colored process paper of the present invention includes a configuration in which the colored layer 3 is formed on the process paper 12 and the elastic resin layer 4 is further formed,
The formed colored layer 3 has no defects such as color loss and wrinkles, and the elastic resin layer 4 is formed on the colored layer 3. As a result, this coloring process paper can be suitably used for manufacturing the above-mentioned coloring film.

As the process paper 12, a sheet made of the same material as the release film 6 described above can be used. For example, polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin,
Resin sheets such as polyvinyl chloride resin, metal foils such as aluminum foil and copper foil, glassine paper, coated paper, cellulosic sheets such as cellophane, or composites of the above respective sheets can be used. Since the process paper having a thickness in this range can absorb the in-process tension during the colored layer forming process, it is possible to prevent the elongation of the colored layer 3 due to the in-process tension, and as a result, The colored layer 3 can be formed easily and without color loss. Therefore, it is possible to easily perform pattern printing and multicolor printing.

Although the process paper 12 is called "paper", it may be composed of only a resin film or a metal foil without substantially including paper. When paper is used, the surface is coated with resin.

The elastic resin layer 4 is formed on the coloring step papers 21 and 31.
After forming the adhesive layer 5 or the release layer 13, a release layer 13 for easily peeling the process paper 12 may be formed. The release layer 13 at this time may be the same as the above-mentioned release layer. Examples of materials for forming the release layer 13 include melamine resin-based release agents, silicone resin-based release agents, fluororesin-based release agents, cellulose derivative-based release agents, urea resin-based release agents, and polyolefin resin-based release agents. A mold agent, a paraffin-based mold release agent, a composite mold release agent thereof, and the like can be used. Examples of the method for forming the release layer 13 include a coating method such as a roll coating method and a spray coating method, and a printing method such as a gravure printing method and a screen printing method.

As shown in FIG. 3, the coloring process paper is
The transparent protective layer 2 may be provided between the process paper 12 and the colored layer 3. In such a coloring process paper 31, the elastic resin layer 4 can be formed on the coloring layer, and can be suitably used for manufacturing a high-quality coloring film 11 having excellent weather resistance.

If a concavo-convex pattern is formed on the surface of the process paper 12 on which the transparent protective layer is formed, the process paper 12
The concavo-convex pattern can be projected on the transparent protective layer 2 formed above. If the unevenness pattern on the surface of the process paper 12 is matte, the transparent protective layer 2 formed on the process paper 12 can have a matting effect. On the other hand, the surface of the process paper 12 opposite to the transparent protective layer forming side,
That is, by forming the surface of the coloring process paper on the side opposite to the colored layer side to be mat-shaped, the surface slip of the process paper 12 is improved and the winding is facilitated. In these cases,
As a method of imprinting a concavo-convex pattern (including a matt shape) on the surface of the process paper 12, when manufacturing a resin film used as the process paper 12, the concavo-convex pattern on the surface of the cooling roll for cooling the melt-extruded resin is used. (Including mats.)

The coloring process paper is particularly preferably used for forming the elastic resin layer 4 made of a polyester elastomer. Moreover, in the coloring process paper of the present invention, it is preferable that the elastic resin layer 4 made of a polyester elastomer is formed. The colored film 61 in which the elastic resin layer 4 made of polyester elastomer is formed on the colored layer 3 of the coloring step paper has flexibility and conformability without affecting the already formed colored layer 3. Since the resin layer 4 is formed, the adhesive layer 5 can be formed after that to obtain the high-quality colored film 61.

The colored process paper can be manufactured by forming the above-mentioned colored layer 3 on the process paper 12 having the release layer 13 formed as necessary. The colored layer 3 and the transparent protective layer 2 can be formed by the various methods described above. In particular, the micro gravure coat 41 as shown in FIG. 4 is preferable, but various methods such as reverse roll coating and gravure coating can also be adopted.

(Production Method of Colored Film) Colored Film 11
Is coated with the colored layer 3 or the transparent protective layer 2 and the colored layer 3 on the process paper 12, and then the elastic resin layer 4 is extruded thereon.
Further, the adhesive layer 5 and the release film 6 are laminated in this order, and the process paper 12 is peeled off (FIG. 1, FIG.
See FIGS. 6 and 7. ). As the coloring process paper used at this time, even if the coloring layer 3 or the transparent protective layer 2 and the coloring layer 3 are coated on the process paper 12, the elastic resin layer 4 is extruded thereon. It may be. Elastic resin layer 4
For the formation of, for example, as shown in FIG. 5, a method of forming on the process paper 12 / colored layer 3 by T die extrusion can be preferably adopted.

In the present invention, since the elastic resin layer 4 is formed after the colored layer 3 is formed in advance, it is possible to easily form an elastic resin material such as polyester elastomer which itself has poor printability. And a colored film can be manufactured.

[0056]

EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples. The present invention is not limited to the examples below.

(Example 1) 45 g / m as the process paper 12
With ² fine paper, thereon to form a release layer 13 having a thickness of 15μm by extrusion coating a polypropylene resin.
On the release layer 13 of this process paper 12, an acrylic polymerizable coating agent (2-liquid curing type, manufactured by Nippon Shokubai, trade name: UV-G300) in which an ultraviolet absorbing monomer is copolymerized in the side chain is used. A transparent protective layer ² is formed by microgravure coating (see FIG. 4) to a thickness of 4 g / m ² with a coating solution for a transparent protective layer consisting of 13 parts by weight of a curing agent and 13 parts by weight of a curing agent. Was formed. Then, a colored pattern is formed on the transparent protective layer 2 with a polyester urethane ink to a thickness of 10 g / m.
^A microgravure coating method was applied so as to obtain 2, and then the coating was dried to form the colored layer 3 to prepare a coloring process paper.

The produced coloring process paper was put on a T-die extrusion device (see FIG. 5), and carbon black as a black pigment and titanium dioxide as a white pigment were added respectively to have a concealing effect, and toned in gray. A polyester elastomer (Nubelan (registered trademark), Teijin Ltd.) was extrusion-coated from the T-die 52 to form an elastic resin layer, and a colored film was produced.

Example 2 A colored process paper and a colored film were produced in the same manner as in Example 1 except that the process paper of Example 1 was biaxially oriented polypropylene. In addition, on one side of the biaxially stretched polypropylene film which is a process paper, a matte base was formed by matt engraving on the surface of the cooling roll during film formation. On the other hand, the other surface was a mirror surface (mirror surface).

In this Example 2, the transparent protective layer 2 was formed on the surface on which the matte base was formed to prepare the colored process paper and the colored film. Therefore, the formed transparent protective layer 2 was matte. It had a matte effect.

Example 3 A colored process paper and a colored film were produced in the same manner as in Example 1 except that the process paper of Example 1 was biaxially oriented polypropylene. In addition, on one side of the biaxially stretched polypropylene film which is a process paper, a mat base was formed by mat engraving on the surface of the cooling roll at the time of film formation. On the other hand, the other surface was a mirror surface (mirror surface).

In Example 3, since the transparent protective layer 2 was formed on the mirror surface to prepare the coloring process paper and the coloring film, the surface of the biaxially oriented polypropylene mat side was exposed on the surface. As a result, the color-processed paper and the color film produced in this manner were easy to be wound in the intermediate step, and the defective product rate due to winding failure was lowered.

[0063]

As described above, according to the colored film of the present invention, since the colored layer is formed on the transparent protective layer, not on the elastic resin layer having flexibility, the formed colored film is formed. The layer does not suffer from defects such as color loss and wrinkles due to elongation of the elastic resin layer. As a result, the colored layer can be provided with a desired thickness without any problem, and a high-quality colored film can be provided. Furthermore, it is preferable to form an elastic resin layer with a polyester elastomer, and a colored film having excellent conformability to the shape of the adherend can be obtained, and a high-quality colored film that also considers environmental problems can be obtained. Can be provided. Such a colored film is widely applicable to marking films, decorative decorative films, building decorative films, and the like.

The colored process paper according to the present invention is a colored process paper in which a colored layer is formed on the process paper and further an elastic resin layer is formed on the processed process paper. However, the elastic resin layer is formed on the colored layer. As a result, this coloring process paper
It can be suitably used for producing a high-quality colored film and the like. In addition, since the coloring process paper has an elastic resin layer made of a polyester elastomer, a colored film produced by applying the coloring process paper has a color loss or a wrinkle caused by elongation of the flexible elastic resin layer or the like. A colored film such as a high quality marking film that has a colored layer that does not have problems such as the above and can be an excellent followability to the shape of the adherend, and that also considers environmental issues. Can be provided.

According to the method for producing a colored film of the present invention, the elastic resin layer is formed on the process paper after the colored layer or the colored layer and the transparent protective layer are formed in advance. Even an elastic resin material having poor printability can be easily extruded and formed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a colored film of the present invention.

FIG. 2 is a cross-sectional view showing an example of the coloring process paper of the present invention.

FIG. 3 is a cross-sectional view showing another example of the coloring process paper of the present invention.

FIG. 4 is an explanatory diagram illustrating a microgravure coating method.

FIG. 5 is a schematic view showing an example of a T-die extrusion coating method for forming an elastic resin layer on a paper for coloring process.

FIG. 6 is a cross-sectional view showing an example of a colored film in which an elastic resin layer is formed on colored paper.

FIG. 7 is a cross-sectional view showing a form of a colored film provided with a colored process paper.

[Explanation of symbols]

2 Transparent protective layer 3 colored layers 4 Elastic resin layer 5 Adhesive layer 6 Release film 11,71 Colored film 12 process paper 13 Release layer 21, 31 Coloring process paper 41 Micro gravure printing 42 Micro Gravure Roll 43 rolls 44 doctor blade 45 side seal 46 Ink supply port 47 nozzles 51 T die extrusion coating 52 T die 53 Extruded resin 54 rolls 61 Coloring film

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 4F100 AA21C AA37C AK01C AK25A                       AK41C AK51B AL01A AL09C                       BA04 BA05 BA07 BA10A                       BA10D BA10E CA02A CC00B                       DG10E EH172 EH461 EJ913                       GB31 GB32 HB31B JD09A                       JK07C JK13 JK17 JL10B                       JL13D JN01A

Claims (7)

[Claims] 1. A colored film, wherein at least a transparent protective layer, a colored layer, an elastic resin layer and an adhesive layer are formed in this order. 2. The colored film according to claim 1, wherein the elastic resin layer is made of a polyester elastomer. 3. A coloring process paper, characterized in that at least a process paper, a coloring layer and an elastic resin layer are formed in this order. 4. The colored process paper according to claim 3, wherein a transparent protective layer is provided between the process paper and the colored layer. 5. The coloring process paper according to claim 3, wherein the elastic resin layer is made of a polyester elastomer. 6. A coloring characterized in that after coating a colored layer on a process paper, an elastic resin layer is extruded thereon, an adhesive layer and a release film are further laminated in this order, and the process paper is peeled off. Film manufacturing method. 7. The process paper is peeled off by applying a transparent protective layer and a colored layer on the process paper, extruding an elastic resin layer thereon, and further laminating an adhesive layer and a release film in this order to release the process paper. A method for producing a colored film, which is characterized.