JP2001030405A - Molded and simultaneouly decorated article having sense of mat, its manufacture and decorated film having sense of mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a good sense of mat (sense of matting) at a molded simultaneously decorated article by integrally mounting a decorated film containing a specific amount of a mat material and having at least a design layer on a rear surface of a base film exhibiting specific values of a whole light transmittance and a haze value at a resin molding. SOLUTION: A decorated film is formed by forming a design layer 2 and an adhesive layer 3 on a base film 1. The film 1 contains a mat material 4 of 3 to 20% to the gross weight. As the film 1, a film having 60 to 98% of a whole light transmittance and 65 to 95% of a haze value is used. The decorated film is formed by providing the layer 2 on a rear surface of the film 1 through the layer 3. This decorated film is integrally adhered to a resin molding 13 to obtain. the molding and simultaneously decorated article having a high haze value and a sense of mat irrespective of a high whole light transmittance. As the material 4, fine particles of a silica, an aluminum hydroxide or the like having a particle size of about 0.05 to 150 μm are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneously decorated decorative article having a matte feeling obtained by integrally bonding a decorative film to the surface of a resin molded article, a method of manufacturing the same, and a decorative article having a matte feeling used in the same It is about a film. Examples of the simultaneously decorated decorative article having a matte feeling obtained by the present invention include an indicator panel of a home appliance (video, audio product, etc.), a meter panel of a car, a design panel of a camera, and the like.

[0002]

2. Description of the Related Art A decorative film having a matte feeling has been integrally bonded to the surface of a resin molded product in order to give a matte (matte) feeling to the surface of a simultaneously decorated decorative article. Is known. Conventionally, a decorative film having a matte feeling has been obtained as follows. (1) At the time of forming a transparent base film, before the molten or dissolved resin is stretched into a film and solidified, the surface is pressed with an emboss roll having fine irregularities, and the emboss roll is formed on the surface of the transparent base film. The irregularities were copied. (2) The surface of the transparent substrate film was coated with an ink obtained by dispersing a mat material in a resin binder by a method such as gravure printing (film thickness: about 1 μm to 5 μm).

[0003]

In (1), since the surface of the embossing roll is pressed, the depth and size of the irregularities formed on the transparent substrate film change depending on the pressing pressure and the temperature of the film surface. It was easy to change the mat feeling. In addition, since the irregularities are formed only on the skin portion of the film, the light rays incident on the film travel straight without being diffused to the skin portion of the film, and are diffused only when they reach the skin portion of the film. Films with a high matte appearance were difficult to obtain.

In (2), the thickness of the obtained mat layer is 1
Since it was about 5 μm to 5 μm, the matte feeling could not be improved. In order to enhance the mat feeling, a mat material having a particle size larger than the thickness of the mat layer (for example, 40 μm
When the thickness is about 140 μm, the following problem occurs. That is, 1) the mat material jumps out of the mat layer, and the mat layer is lifted. As a result, there is a possibility that the mat layer is separated from the transparent base film.
2) The mat material protruding from the mat layer was easily caught by the doctor during printing. 3) Since it is large in volume and weight, it is difficult to disperse in the ink, and there is a possibility that unevenness in the matt feeling may occur. In addition, when the amount of the mat material is increased in order to enhance the matte feeling, the ratio of the resin binder in the ink that should fulfill the adhesive function with the transparent base film decreases, so that the mat layer hardly adheres to the surface of the transparent base film. became. In addition, since the mat layer is formed by coating, when a hard material hits the mat layer, the mat layer is easily peeled or torn, and the mat feeling may be changed. Further, the mat layer may be peeled off from the transparent base film due to expansion and contraction stress of the mat layer due to heating and cooling during the molding.

[0005] An object of the present invention is to provide a matte material that is hardly changed, does not weaken even when heated and softened, has no mat material spattering or peels off the mat layer, and has a high total light transmittance. Regardless, it is an object of the present invention to provide a simultaneously decorated decorative article having a matte feeling with a high haze value, a production method thereof, and a decorative film having a matte feeling.

[0006]

Means for Solving the Problems In order to achieve the above object, a molded simultaneous decorative article having a matte feeling, a method of manufacturing the same, and a decorative film having a matte feeling according to the present invention are constituted as follows. . In other words, the simultaneously decorated decorative article having a matte feeling of the present invention has a total light transmittance of 60% to 98% including a mat material of 3 to 20% and a haze value of 65% to the total weight.
A decorative film having at least a picture layer on the back surface of a base film of 95% is integrally bonded to a resin molded product. In the simultaneously decorated decorative article having a matte feeling of the present invention, the thickness of the base film is 25 μm to 25 μm.
It may be 0 μm. In the above-mentioned molded simultaneous decorative article having a matte feeling of the present invention, the decorative film having a matte feeling comprises a picture part having a total light transmittance of 60 to 95% and a picture part having a total light transmittance of 5% to 0%. It may be one that has coexistence. Further, the simultaneously decorated decorative article having a matte feeling of the present invention may be used by illuminating from the back. The method for producing a simultaneously decorated decorative article having a matte feeling according to the present invention comprises a base film having a total light transmittance of 60% to 98% and a haze value of 65% to 95% containing a mat material of 3 to 20% based on the total weight. A decorative film having at least a pattern layer on the back side, after preforming, integrated with the molding resin melted in the mold, and taking out the simultaneously decorated decorative article after cooling and solidifying the molding resin. I do. In the method for producing a simultaneously decorated decorative article having a matte feeling according to the present invention, the molding resin may be a transparent or translucent resin having a total light transmittance of 60% to 99.9%. The decorative film having a matte feeling according to the present invention has a total light transmittance of 60% to 98% and a haze value of 65% containing a mat material of 3 to 20% based on the total weight.
It is characterized by having at least a picture layer on the back surface of about 95% of the base film. In the decorative film having a matte feeling according to the present invention, the decorative film having a matte feeling includes a pattern portion having a total light transmittance of 60 to 95% and a pattern portion having a total light transmittance of 5% to 0%. It may be one that has coexistence.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. The decorative film having a matte feeling according to the present invention will be described first.

As a basic layer configuration of the decorative film 5, for example, there is a decorative film 5 in which a picture layer 2 and an adhesive layer 3 are formed on a base film 1 (see FIG. 1). To express the transparency of the base film 1, there are a total light transmittance as a measure of brightness and a haze value as a measure of sharpness. The total light transmittance is measured by an integrating sphere light transmittance measuring device (JIS K6717).
-1958), and the ratio (Tt = T2 / T1) of the incident light amount (T1) of visible light and ultraviolet light to the total light amount (T2) transmitted through the test piece is expressed in percentage. The haze value is such that when light passes through a material, in addition to reflection and absorption depending on the type of material, light is scattered due to the intrinsic properties of the material, and there are some that show an unclear cloudy appearance. In (2), the degree of diffusion of light rays incident on the material is quantified (cloudiness value). It is also called haze degree. This value represents the ratio (Td / Tt) to the scattered light transmittance (Td) and the total light transmittance (Tt) in percentage. For measuring the haze value, a method similar to that for the total light transmittance is used. The substrate film 1 of the present invention has a total light transmittance of 60% to 98%. The reason is that if it is less than 60%, the picture layer 2 on the back surface becomes difficult to see, and if it is more than 98%, it becomes difficult to recognize the matte feeling. The haze value of the base film 1 in the present invention is 65% to 95%. The reason is that if it is smaller than 65%, it is difficult to recognize the matte feeling, and if it is larger than 95%, the picture pattern 2 on the back surface becomes difficult to see.

The thickness of the base film 1 is 25 μm to 25 μm.
0 μm is preferred. The reason is as follows. 25
When the thickness is smaller than μm, the strength of the base film 1 cannot withstand the tension applied when printing the pattern layer 2 described later or the tension applied during preforming described later, and the base film 1 is easily broken. is there. On the other hand, if it is thicker than 250 μm,
When printing is performed, there arises a problem that a diameter of a roll for winding the base film 1 becomes too large to be installed in a printing machine, and a problem that a winding length becomes short and production efficiency is hindered. It is easier. In addition, there is also a problem that it is difficult to deform when a decorative film 5 described later is preformed into a three-dimensional shape.

The resin components of the base film 1 include polyester resins such as polyethylene terephthalate resin and polybutylene terephthalate resin, polypropylene resins, polyolefin resins such as polyethylene resins, polyvinyl fluoride resins, polytetrachloroethylene resins, and polyvinylidene fluoride. Fluorine resin such as resin, polyvinyl chloride resin, vinyl resin such as polyvinylidene chloride, polycarbonate resin, acrylonitrile-butadiene-styrene copolymer, thermoplastic elastomer resin, polyacrylate resin, polyamide resin, polystyrene resin, polyvinyl alcohol A transparent or translucent resin made of a resin such as a resin, a polyimide resin, a polyarylate resin, and a polyether ketone can be given. The base film may be colored and transparent by including a colored transparent pigment or dye. The base film 1 may be composed of one layer,
They may be stacked.

The mat member 4 is for providing a matte feeling to the base film 1, and is composed of fine particles. The particle size of the mat member 4 is 0.05 μm to 150 μm.
μm is preferred. The reason is that if it is smaller than 0.05 μm, it is easy to obtain a haze value that is too high,
On the other hand, if it is larger than 150 μm, the matting material 4 is less likely to be dispersed in the ink. A more preferred range is from 0.1 μm to 50 μm.

As a material of the mat member 4, an inorganic compound,
There are organic compounds. Examples of inorganic compounds include oxides such as silica, hydroxides such as aluminum hydroxide, silicates such as talc, calcium silicate and aluminum silicate, carbonates such as magnesium carbonate and calcium carbonate, and precipitated barium sulfate. Sulfates, phosphates such as calcium phosphate,
Carbon, others, white dolomide, kaolinite and the like. Organic compounds include fine particles of acrylic resin, acrylic urethane resin, styrene resin, silicone resin, nylon resin, urethane resin, fluorine resin, benzoguanamine resin, melamine resin, urea resin, etc. There is. Preferably, some particles, such as extender pigments, have a white appearance only with particles and become transparent or translucent when included in a resin component. Further, fine particles of the inorganic compound or the organic compound may be coated with a polyurethane resin, an acrylic resin, a nylon resin, or the like.

The shape of the mat member 4 is granular, spherical, acicular,
Cubes, spines, columns, irregular shapes, etc. In particular, the spherical mat member 4 is most preferable because it can be uniformly dispersed in the resin component of the base film 1. The reason is that since the contact area between the mat members 4 is small, secondary aggregation is difficult, and the mat members 4 are easily dispersed uniformly in the ink. Further, the spherical mat member 4 can have a depth depending on the color of the picture layer 2. This is because the spherical mat member 4 can most effectively produce a wet color (commonly referred to as velvet touch).

The ratio of the matting material 4 contained in the resin component is preferably 3 to 20% (% by weight) based on the total weight of the base film 1. The reason is that the total light transmittance is 60% to 9%.
This is because the base film 1 having a haze value of 8% and a haze value of 65% to 95% can be obtained. That is, when the light beam incident on the base film 1 passes through the inside of the base film 1, the light beam that passes through the back surface of the base film 1 without colliding (or almost completely) with the mat member 4 is different from the matte light. The light is divided into light rays that are scattered by colliding with the material 4,
When the numerical value of is satisfied, the balance between the ratio of the light beam that penetrates to the back surface of the base film without colliding (or hardly) with the mat member 4 and the light beam that collides with the mat member 4 and is diffused. This is because the predetermined total light transmittance and haze value can be obtained. The haze value is 65
% To 95% is a light ray that is diffused immediately after entering the base film 1, a light ray that is diffused in the middle of the base film 1, or a light ray that is diffused immediately before the transmission of the base film 1 is completed. This is considered to be because light rays are diffused at various points in the base film 1 from the near side to the back side. On the other hand, if it is less than 3%, the matte feeling is insufficient. On the other hand, if it is more than 20%, the secondary condensation of the particles of the matting material 4 easily occurs, making it difficult to disperse in the ink, and it is difficult to obtain a uniform matte feeling over the entire pattern. This is because it can be easy to become. In addition,
When the colored transparent pigment to be included in the base film 1 for transparent coloring or the colored transparent pigment used for the picture layer 2 affects the numerical value of the total light transmittance or the haze value of the base film 1, the matting material 4 is used. It is preferable that the total weight with the colored transparent pigment is 3 to 20% (% by weight) with respect to the total weight of the base film 1. In the case where the decorative film 5 is heated and softened before being integrally bonded to the resin molded article 13 and formed into a three-dimensional shape, the decorative film obtained by the above-mentioned prior art (1) requires In the accompanying cooling, the matte feeling sometimes weakened, but such a problem does not occur in the decorative film 5 according to the present invention. In addition, when there is a bias in how heat is applied, in the decorative film obtained by the above-described conventional technique (1), areas having a different matte feeling may be generated on one decorative film surface. In the decorative film 5 according to the present invention, such a problem does not occur, and a uniform matte feeling can be obtained as a whole.

The color of the mat member 4 may be white before being included in the resin component of the base film 1 and translucent when included in the resin component.

An example of a method for forming the base film 1 is as follows. The base film 1 and the mat member 4 are mixed, for example, in a weight ratio of 100: 5 to 100: 15, and may be prepared by a T-die extrusion method, a calendar method, an extrusion method, or the like. . Note that a stretching step may be included in the step of forming the film.

The picture layer 2 is a layer for expressing characters, numbers, figures, symbols, patterns and the like. The picture layer 2 is formed using an ink containing a resin binder, a pigment or dye as a colorant, an additive, and the like. In order to impart transparency to the picture layer 2, a transparent ink composed of a transparent resin binder and a colored transparent pigment or a transparent dye may be used. In order to impart hiding power to the picture layer 2, a light-shielding ink composed of a resin binder and a hiding metal pigment or inorganic pigment may be used. In order to impart a metallic feeling to the picture layer 2, vacuum deposition, sputtering, or ion plating is performed using a metal material such as a metal, a metal oxide, a metal fluoride, a metal halide, a metal nitride, and a metal sulfide. It is good to form by such as.

The decorative film 5 having the picture layer 2 formed on the back surface of the base film 1 has a total light transmittance of 60 to 95%.
It is preferable to have a pattern portion and a pattern portion having a total light transmittance of 5% to 0% coexist (see FIG. 5). In this case, the total light transmittance is not a measured value of the base film 1 alone, but a measured value of a layered portion of the base film 1 and the picture layer 2. The reason is as follows. When the decorative article of the present invention is used as an indicator panel and is illuminated from behind by a light source 10 such as an LED or a miniature light bulb, the picture portion 11 having a total light transmittance of 60 to 95% transmits light, while the total light transmittance. As a result that the light is not transmitted through the picture portion 12 of 5 to 0%, only the pattern such as the character of the indicator formed by the picture portion having the total light transmittance of 60 to 95% shines and is easily recognized. Moreover, since the pattern has a matte appearance, the contours of the LEDs and miniature bulbs are not recognized, and the entire surface appears to shine uniformly.

The adhesive layer 3 is a layer for adhering the above-mentioned layers to the surface of a resin molded article 13 which has been filled with a molding resin, which will be described later, and then cooled and solidified. When a polyacrylic resin is used as the molding resin, a polyacrylic resin may be used for the adhesive layer 3. When the molding resin is a polyphenylene oxide resin / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene blend resin, a polyacryl resin, a polystyrene resin having an affinity for these resins, A polyamide resin or the like may be used. Examples of the method for forming the adhesive layer 3 include coating such as gravure coating, roll coating, and comma coating, and printing such as gravure printing and screen printing. The dry film thickness of the adhesive layer 3 is 1 μm or more.
It is generally 5 μm.

[0020] The method of manufacturing a simultaneously decorated decorative article according to the present invention comprises:
The decorative film 5 is preliminarily molded, integrated with a molding resin melted in a mold, and taken out after cooling and solidification of the resin.

A specific example of the method for manufacturing a simultaneously decorated decorative article of the present invention is shown below. First, the decorative film 5 is preformed. As preforming, vacuum forming method with heating
Compressed air forming method and vacuum / pressed air forming method using them together,
There are a press molding method and a press molding method in which heated rubber is pressed. As a method of cutting off an excess portion of the preformed decorative film 5, there are a Thomson punching method, a pressing method using a mold, and the like.

Next, the decorative film 5 is positioned and placed in a mold. For example, it is preferable to use a mold including a cavity mold 6 along which the outer surface of the decorative film 5 formed into a three-dimensional shape closely adheres and a core mold 8 having a resin filling port 7.

Next, the cavity mold 6 and the core mold 8 are clamped to form a cavity filled with the molding resin 9, and the molding resin 9 is filled into the cavity from the resin filling port 7. (See FIG. 3), the resin molded product 13 and the decorative film 5 are bonded and integrated, and the resin molded product 13 is taken out after cooling and solidification (see FIG. 4). As the molding resin 9, an acrylic resin, a polycarbonate resin, or the like can be used. The molding resin 9 has a total light transmittance of 60% to 9%.
It is preferred to use up to 9.9% of a transparent or translucent resin. The reason for this is that, when the decorative article of the present invention is used as an indicator panel, for example, when light is illuminated from behind by a light source such as an LED or a miniature bulb, light rays are transmitted through the resin molded article 13 without fail. .

[0024]

EXAMPLE An alloy resin containing 60% of a polycarbonate resin and 40% of a polyester resin and granular silica having a particle size of 5 μm (10% based on the total weight) were compounded. This was extruded into a 130 μm film by a T-die method. This film is used as an integrating sphere light transmittance measuring device (JISK
6717-1958), the total light transmittance was 80% and the haze value was 89%. Using this film as a base film, a hiding layer (carbon black-containing layer) and a colored transparent layer (blue transparent dye-containing layer) were printed thereon as a picture layer constituting a pattern such as a scale of an indicator of an automobile instrument panel. . Among the laminated portions of the picture layer and the base film, the total light transmittance of the picture portion on which the concealing layer was laminated was 0%, and a transparent window was obtained in which the colored transparent layer was exposed in a region surrounded by the concealing layer. The total light transmittance of the picture portion was 80%. An adhesive layer made of a polyester resin was printed on the picture layer. As described above, a decorative film was obtained. This decorative film is
After heating with a heater at 00 ° C. for 30 seconds to raise the surface temperature of the decorative film to 180 ° C. to make it softened,
The pattern portion of the picture layer was formed into a three-dimensional shape by press-forming and preforming, and an extra portion was cut off and set in a mold so that the base film side was in contact with a mold surface capable of filling with resin. Injection molding is performed using a polycarbonate resin having a total light transmittance of 98% as a molding resin to be filled in the mold, and the molding resin and the decorative film are bonded and integrated,
After cooling and solidification of the molding resin, the resin was taken out to obtain an automobile instrument panel. In the simultaneously decorated decorative article having a matte feeling obtained as described above, there was no change in the matte feeling (changes in the total light transmittance and the haze value) in the pattern portion even during preforming.

[0025]

According to the present invention, a molded simultaneous decorative article having a matte feeling and a method for producing the same, and a decorative film having a matte feeling, as a layer for producing a matte feeling, have a thickness of 3% based on the total weight of the base film. A substrate film having a total light transmittance of 60% to 98% and a haze value of 65% to 95% containing a mat material of ２０20% is used. Therefore, the following effects are obtained. (1) Since the matte material is included in the resin component of the base film so that the pattern layer on the back surface is easy to see and the matte feeling can be recognized, the matte feeling does not change. Also, since the mat material is dispersed into the inside of the film, the light is diffused in various places from the near side to the back side of the inside of the base film, so even though the total light transmittance is high, A film capable of exhibiting a matte feeling with a high haze value can be obtained.

(2) Since the appearance of a matte feeling is present inside the base film, it is easy to increase the thickness of the obtained mat layer, and the matte feeling can be easily enhanced. . Further, it is impossible that the mat layer is peeled off.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view showing an example of a simultaneously decorated decorative article of the present invention.

FIG. 3 is a cross-sectional view showing an example of one step of the method of manufacturing a simultaneously decorated decorative article of the present invention.

FIG. 4 is a cross-sectional view showing an example of one step of the method for producing a simultaneously decorated decorative article according to the present invention.

FIG. 5 is a cross-sectional view showing an example of the simultaneously decorated decorative article of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base film 2 Picture layer 3 Adhesive layer 4 Mat material 5 Decorative film 6 Cavity mold 7 Resin filling opening 8 Core mold 9 Molding resin 10 Light source 11 Picture part with total light transmittance of 60 to 95% 12 Total light transmittance 5-0% pattern part 13 Resin molding

Claims (8)

[Claims] 1. A total light transmittance of 60% to 98% containing a mat material of 3 to 20% based on a total weight, and a haze value of 65% to 95.
%, Wherein a decorative film having at least a pattern layer on the back surface of the base film is integrally bonded to a resin molded product. 2. A base film having a thickness of 25 μm to 250 μm.
The molded simultaneously decorated article having a matte feeling according to claim 1, which has a size of μm. 3. A decorative film having a matte feeling, comprising a picture portion having a total light transmittance of 60 to 95% and a total light transmittance of 5%.
2. A material having a pattern portion of about 0% in combination.
Or a simultaneously decorated decorative article having a matte feeling according to 2. 4. The simultaneously decorated decorative article having a matte feeling according to claim 1, wherein the article is illuminated from the back. 5. A total light transmittance of 60% to 98% including a mat material of 3 to 20% based on the total weight, and a haze value of 65% to 95.
% Of the decorative film having at least the pattern layer on the back surface of the base film is preformed, then integrated with the molding resin melted in the mold, and the molded simultaneously decorated product is cooled and solidified after the molding resin is cooled. A method for producing a molded simultaneous decorative article having a matte feeling, characterized by taking out. 6. The molding resin has a total light transmittance of 60% to 9%.
The method for producing a simultaneously decorated molded article having a matte feeling according to claim 5, wherein the molded article is a transparent or translucent resin of 9.9%. 7. A total light transmittance of 60% to 98% including a mat material of 3 to 20% to a total weight, and a haze value of 65% to 95.
% Of a base film having at least a picture layer on the back surface thereof. 8. A decorative film having a matte feeling comprising a picture portion having a total light transmittance of 60 to 95% and a total light transmittance of 5%.
8. A pattern having a pattern portion of about 0%.
A decorative film having a matte feeling according to the item.