JP2002002192A - Decorative film and method for producing decorative molding using the film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative film excellent in design effects, to which gradation is applied in particular, with regard to the trim of a car, a decorative molding such as a building material, and a method for producing the decorative molding, in which the film is used. SOLUTION: In the decorative film in which at least a pattern layer is formed on a substrate sheet, a pattern in which numbers of pattern components in which the sum of areas in which gradation is applied at least in one direction is at least 50% is provided. When chromaticity is measured at three or more measuring points with the gradation moved in turn at equal intervals of 0.2-1.0 mm in the direction in which the gradation is applied by JIS Z 8729-1980 (L*a*b* color model <1976> by CIE), at least one of the stimulus values L*a*b* of the chromaticity obtained at each measuring point is increased or decreased continuously between the measuring points, and each color difference ΔE produced during an optional measuring transfer of 2.0 mm is at least 0.2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automobile interior,
Regarding a decorative molded product such as a building material and a decorative film used for the production thereof and a method of manufacturing a decorative molded product using the same,
In particular, it relates to an excellent design effect using gradation.

[0002]

2. Description of the Related Art Wood-grained, hairline, metallic, and spin-tone decorative molded products have been used for interiors and building materials of automobiles. Further, as a decorative molded product, a product simply having a gradation over the entire surface has been used.

[0003]

However, in recent years, the design of automobile interiors, building materials, and the like has become more demanding, and conventional patterns have not been sufficient. Therefore, an object of the present invention is to solve the above problems, and to provide a decorative film excellent in design and a method for manufacturing a decorative molded product using the same.

[0004]

In order to achieve the above object, a decorative film according to the present invention comprises a decorative film having at least a pattern layer formed on a base sheet, in a region where gradation is applied in at least one direction. Has a symbol pattern in which a large number of symbol components occupying 50% or more of the total are arranged, and the gradation is JIS Z 8729.
-1980 (L ^* a ^* b ^* color system by CIE <197
6>) in the direction of gradation
When chromaticity is measured at least at three or more measurement points while sequentially moving at equal intervals of 1.0 mm, at least the stimulus values L ^* , a ^* , and b ^* of the chromaticity obtained at each measurement point One is a continuous increase or decrease between the measurement points, and the color difference ΔE that changes during any 2.0 mm measurement movement is such that ΔE ≧ 0.2. Configured.

[0005] In the above-mentioned configuration, all of the design components may be the same with respect to the change in the gradation applied to the design components, the direction thereof, and the area of the gradation portion.

In the above arrangement, two or more kinds of design components may be present for at least one of a change in the gradation applied to the design component, its direction, and the area of the gradation portion.

Further, in a configuration in which two or more types of design components exist for this gradation, the design components are arranged in a line, and the change in the gradation, its direction, and the area of the gradation portion are the same. Elements may be repeated regularly.

Further, in the above configuration, all the symbol components may be the same in the size of the symbol components.

In the above configuration, two or more types of symbol components may be present for the size of the symbol components.

[0010] Further, in a configuration in which two or more types of symbol components exist in the size of the symbol components, the symbol components are arranged in a line and the symbol components having the same size are regularly arranged. May be repeated.

Further, in the above configuration, the symbol components may be arranged in a line.

Further, in the above configuration, the symbol components may be arranged without being aligned.

[0013] In the above structure, a gap may be provided between the symbol components.

In the above configuration, there may be no gap between the symbol components.

[0015] In the above-mentioned configuration, at least one of a change in a gradation applied to the design component, a direction of the change, a region of the gradation portion, and a size of the design component is provided. May be set as a series in which two or more types of symbol components exist, and the same series of combinations of symbol components may be repeated.

Further, in a configuration in which a series is repeated, all the series may be the same.

Further, in a configuration in which the ream is repeated,
There may be more than one kind of ream.

In the configuration in which two or more reams exist, the reams may be arranged in a line, and the same ream of the combination of the symbol components may be repeated regularly.

Further, in the above-mentioned configuration, in combination with the above-mentioned gradation, it is possible to have a design component in which another design such as a grain, a stone, a logo, a hairline, and a spin pattern is combined.

In the method for producing a decorative film according to the present invention, the decorative film is inserted into a mold for injection molding, the mold is closed, and a molten molding resin is injected to form the decorative film simultaneously with the molding. The molding film was integrated with the surface of the resin molded product, and after cooling and solidification, the molded product was taken out of the mold.

Further, in the above configuration of the manufacturing method, the base sheet may be peeled off after or when the molded article is taken out from the mold.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a graph for explaining the gradation of a symbol constituting element according to the present invention in terms of a change in lightness. FIG. 2 is a graph illustrating the gradation of the symbol component according to the present invention in terms of the change in saturation. FIG. 3 is a graph illustrating the gradation of the design component according to the present invention in terms of the change in hue. FIG. 4 is a graph illustrating a continuous change corresponding to a gradation of a symbol component according to the present invention. FIG. 5 is a graph illustrating a continuous change that does not correspond to the gradation of the symbol component according to the present invention. FIG. 6 is a graph illustrating the change rate corresponding to the gradation of the symbol component according to the present invention. FIG. 7 is a diagram showing an example of the gradation direction and the degree of change in the gradation-applied region of the symbol component according to the present invention. 8 to 19 are diagrams illustrating examples of the symbol pattern according to the present invention. FIG. 20 is a cross-sectional view showing one embodiment of the decorative film according to the present invention. FIG. 21 is an embodiment showing one embodiment of a process for manufacturing a decorative molded product according to the present invention. FIG. 22 is a diagram showing an example of a gradation-applied area of a symbol component according to the present invention. In the drawing, 1 is a decorative film, 2 is a base sheet, 3 is a design layer, 4 is an adhesive layer, 5 is a design component, 6 and 7 are consecutive,
8 is a movable mold, 9 is a fixed mold, 10 is a cavity forming surface, 1
1 denotes a gate portion, 12 denotes a molding resin, and 13 denotes a cavity. In addition, although each symbol component 5 in the figure is shown with a black frame for convenience, a black frame may not actually be formed.

First, the decorative film of the present invention will be described.

As the decorative film 1 of the present invention, a transfer material or an insert material can be used.

The insert material has a design layer 3 and the like formed on a base sheet 2 (see FIG. 20).

The base sheet 2 is made of polyester resin, polypropylene resin, polyvinyl chloride resin, polyethylene resin, polyethylene resin, polycarbonate resin, nylon resin, vinylon resin, acetate resin, polyamide resin, polyacryl resin. Or a substrate used as a base sheet for a normal insert material, such as a composite of these sheets. The thickness of the base sheet 2 can be 10 to 200 μm.

The design layer 3 may be formed by printing a pattern on one or both of the front and back surfaces of the base sheet 2. The design layer 3 is usually formed as a printing layer. As the material of the printing layer, urethane resin, vinyl resin, polyamide resin, polyester resin, acrylic resin, polyurethane resin, polyvinyl acetal resin, polyester urethane resin, cellulose ester resin, alkyd resin, heat It is preferable to use a colored ink containing a resin such as a plastic elastomer, preferably a resin capable of forming a flexible film as a binder and a pigment or dye of an appropriate color as a colorant.

A feature of the present invention is that a large number of the pattern components 3 are arranged in the pattern layer 3 with the pattern components 5 occupying 50% or more of the total of the regions in which the gradation is applied in one or more directions as one unit. (See FIGS. 8 to 19).

In the present invention, gradation means J
IS Z 8729-1980 (L by CIE^*a^*
b^*Gradation depending on the measurement method of the color system <1976>)
Sequentially at equal intervals of 0.2 to 1.0 mm in the direction of application
Move and measure the chromaticity at at least three measurement points
Stimulus value L of chromaticity obtained at each measurement point^*,
a ^*, B^*At least one of which is continuously between the measurement points
That is increasing or decreasing
The color difference ΔE that changes during the measurement movement of 2.0 mm
Also refers to those satisfying ΔE ≧ 0.2.

That is, besides the lightness which is continuously changed as shown in FIG. 1 (for example, white-gray-black, etc.), the lightness which is continuously changed as shown in FIG. , Red-orange-yellow-yellow-green-green, etc.) as shown in FIG. 3 (for example, pure yellow and light yellow in which pure yellow is mixed with gray of the same lightness). Yellow, etc.) or a combination thereof can be used as a gradation. The brightness can be changed by continuously changing the halftone dot density of the printing plate. The hue can be changed by using an ink containing a light interference pigment or a liquid crystal ink. The change in saturation can be performed by continuously changing the halftone density of a printing plate that is formed by changing halftone density on a color layer having a pure color or a color close thereto.

However, the continuous increase or decrease means that the measurement points are measured by moving sequentially at equal intervals of 0.2 to 1.0 mm.
As shown in the figure, the gradation is actually measured point (in the figure,
There may be a portion (circled portion in the figure) where the chromaticity stimulus value does not continuously increase or decrease between the (rounded points). The change in the chromaticity stimulus value in FIG. 5 shows a locus similar to that in FIG. 4, but measurement points (round points in the figure) measured by sequentially moving at equal intervals of 0.2 to 1.0 mm are measured. Since the stimulus value of the chromaticity is not continuously reduced, it is not regarded as the gradation of the present invention.

Further, even if the chromaticity stimulus value of the measurement point continuously changes, if the change amount is too small with respect to the measured moving distance, it is not regarded as the gradation of the present invention. The change in the chromaticity stimulus value shown in FIG. 6 is ΔE = 0.2 for a measurement movement distance of 2 mm. However, the gradation of the present invention shows that the color difference ΔE that changes during an arbitrary 2.0 mm measurement movement is different. Also show any further changes. More preferably, ΔE is 1.0 or more.

The symbol component 5 has an area 5b which is partially out of the definition of the gradation, if the total is less than 50% of the element, together with the area 5a to which the gradation is applied. (See FIG. 22). Two or more gradation areas 5a may exist in one element (see FIGS. 22B to 22D). Also, two or more regions 5b out of the definition of the gradation may exist in one element (FIG. 22).
d).

The direction of the gradation applied to an arbitrary area in the design component 5 may be one direction as shown in FIGS. 7 (a) to 7 (c) or the like, or FIGS. 7 (d) to 7 (g). , Four directions as shown in FIGS. 7 (h) and 7 (i), or other plural or multiple directions. Further, a case where gradation is applied in all directions (infinite direction) from one point is also included. Even if the direction of the gradation is the same, the change content of the gradation, that is, the hue, lightness, and saturation are changed (not shown), and the degree of the change is shown in FIGS. 7 (j) to (l). By making them different from each other, it is possible to obtain various kinds of design components for gradation.

A symbol pattern in which a large number of symbol components 5 occupying 50% or more of the total of the regions in which the gradation is applied in one direction or more is arranged can give a viewer a sense of perspective, By combining various gradations that make you feel the direction, you can compose a pattern that is rich in perspective and directionality, for example, a pattern that expresses abstractly the woven pattern or wave of a repeated fabric. It has excellent design.

For example, this symbol pattern can be used as a carbon pattern.

In the design pattern of the present invention, all of the design components may be the same with respect to the change in the gradation of the above-described design components, the direction thereof, and the area of the gradation portion (see FIGS. 8 and 15).

In the design pattern of the present invention, two or more design components may be present in at least one of the change in the gradation of the above-described design component, its direction, and the area of the gradation portion (FIG. 9). To 14). Further, the above-mentioned design components may be arranged in a line, and the change in gradation and the same design component in the same direction may be repeated regularly (FIGS. 10 and 1).
2).

In the symbol pattern of the present invention, all the symbol components may be the same in the size of the symbol components (see FIGS. 8, 9, 11, 12, and 15).

The design pattern of the present invention may include two or more design components with respect to the size of the design component (see FIGS. 10, 13, and 14). Also,
The above-mentioned symbol components may be arranged in a line, and symbol components having the same size may be regularly repeated (see FIGS. 10 and 13).

In the symbol pattern of the present invention, the above-mentioned symbol components may be arranged in a line (see FIGS. 8 to 1).
3), and the above-mentioned symbol components may be arranged without being aligned (see FIGS. 14 and 15).

The symbol pattern of the present invention may have a gap between the above-mentioned symbol components (FIGS. 10, 11, and 1).
3 to 15), and there may be no gap between the above-mentioned symbol components (see FIGS. 8, 9, and 12).

The symbol pattern according to the present invention is composed of a plurality of symbol components, in which the gradation applied to the symbol components and its direction, the area of the gradation portion, and the size of the symbol components are determined. A set in which two or more types of symbol components exist for at least one may be a series, and the same series of combinations of symbol components may be repeated (see FIGS. 16 and 17). All the runs may be the same (see FIG. 16), or the runs may be arranged side by side, and the same run of the combination of symbol components may be regularly repeated (see FIG. 17). ).

In the above description, the shape of the symbol component is a square, but the shape of the symbol component according to the present invention is not limited to this (see FIGS. 18 and 19).

Since colors cannot be used in the drawings of the present application, in FIGS. 7 to 19, the difference in gradation between the gradation-applied regions or the difference in gradation between the pattern components is determined by the direction of the gradation and the change in the gradation. Although it is expressed only by the degree, especially the difference in the direction, in the embodiment of the present invention, the difference in gradation between the pattern components can be expressed also by the difference in the change in the hue, lightness, and saturation of the gradation. Needless to say.

FIGS. 8 to 19 show an embodiment in which the gradation-applied area occupies 100% of the element by itself, but as described above, the gradation is partially defined from the definition of gradation. The out-of-order area 5b may be less than 50% in the element in total, or two or more gradation areas 5a may exist in one element.

Further, in combination with the above gradation, there may be provided a design component in which another design such as a grain, a stone, a logo, a hairline, and a spin pattern is combined.

As a method for forming the printing layer constituting the above-described pattern pattern, a normal printing method such as an offset printing method, a gravure printing method, and a screen printing method may be used. In particular, when the design pattern has gradation as in the present invention, the offset printing method or the gravure printing method is suitable. The printing layer may be provided entirely or partially depending on the design to be expressed.
When the gradation is combined with another design as described above, the combined design may or may not have concealment.

The design layer 3 may be composed of a combination of a printing layer and a metal thin film layer. The metal thin film layer is for expressing metallic luster as the design layer 3, and is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. Aluminum, nickel, gold, platinum, chromium,
Metals such as iron, copper, tin, indium, silver, titanium, lead, and zinc, metal oxides, metal fluorides, metal halides, metal nitrides, and metal sulfides are used. As an example of forming a partial metal thin film layer, after forming a solvent-soluble resin layer in a portion that does not require a metal thin film layer,
There is a method in which a metal thin film is entirely formed thereon, and a solvent washing is performed to remove an unnecessary metal thin film together with a solvent-soluble resin layer. The solvent often used in this case is water or an aqueous solution. As another example, there is a method in which a metal thin film is formed on the entire surface, a resist layer is formed on a portion where the metal thin film is to be left, and the resist layer is removed by etching with an acid or an alkali. .

Further, the adhesive layer 4 may be formed. The adhesive layer 4 is for bonding an insert material to the molding resin 12 and is formed on the decorative film 1 on the design layer 3 side or the base sheet 2 side as necessary. As the adhesive layer 4, a heat-sensitive or pressure-sensitive resin suitable for the material of the molding resin 12 is appropriately used. For example, when the material of the molding resin 12 is an acrylic resin, an acrylic resin may be used. Also,
When the material of the molding resin 12 is a polyphenylene oxide / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene blend resin, an acrylic resin, a polystyrene resin, or a polyamide resin having an affinity for these resins. Etc. should be used. Further, when the material of the molding resin 12 is a polypropylene resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and coumarone indene resin can be used. Examples of a method for forming the adhesive layer 4 include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method. The dry film thickness of the adhesive layer is generally 1 μm to 5 μm.

Next, the case where the decorative film 1 is used as a transfer material will be described. The transfer material is such that a transfer layer including a release layer, a design layer 3, an adhesive layer 4, and the like is provided on a base sheet 2.

As the base sheet 2, the same sheet as that of the insert material can be used. In order to improve the releasability of the transfer layer from the base sheet 2, the base sheet 2
Before providing a transfer layer thereon, a release layer may be formed over the entire surface. When the base sheet 2 is peeled off after the transfer, the release layer is released from the transfer layer together with the base sheet 2. As the material of the release layer, a melamine resin-based release agent, a silicone resin-based release agent, a fluororesin-based release agent, a cellulose derivative-based release agent, a urea resin-based release agent, a polyolefin resin-based release agent, Paraffin-based release agents, composite release agents thereof, and the like can be used. As a method of forming the release layer,
There are coating methods such as a roll coating method and a spray coating method, and printing methods such as a gravure printing method and a screen printing method.
Before providing the transfer layer on the base sheet 2, a matte surface may be formed by forming a hairline design or forming an uneven layer with a pigment ink to form a mat design. Hairline designs and mat designs may be partially formed.

The release layer is formed entirely or partially on the base sheet 2 or the release layer. The peeling layer is a layer that is peeled from the base sheet 2 or the release layer when the base sheet 2 is peeled after the transfer, and becomes the outermost surface of the transfer object. Examples of the material of the release layer include acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, and the like, as well as vinyl chloride-vinyl acetate copolymer. It is preferable to use a resin or a copolymer such as an ethylene-vinyl acetate copolymer resin. When the release layer requires hardness, a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. The release layer may be colored or uncolored. As a method of forming the release layer, a coating method such as a gravure coating method, a roll coating method, a comma coating method,
There are printing methods such as a gravure printing method and a screen printing method.

The design layer 3 may be provided in the same manner as in the case of the insert material.

The adhesive layer 4 is for bonding the above layers to the surface of the molding resin 12. The adhesive layer 4 is formed on a portion to be bonded. That is, if the portion to be bonded is the entire surface, the adhesive layer 4 is entirely formed on the design layer 3. Also,
If the part to be adhered is partial, the adhesive layer 4
Is partially formed. The adhesive layer 4 may be provided in the same manner as in the case of the insert material.

The ink used for each layer of the insert material and the transfer material includes silica, barium sulfate, talc,
Filler made of fine powder such as alumina, acrylic beads,
An organic filler such as urethane beads may be included. In addition, additives such as a leveling agent, an abrasion resistance enhancer, an antistatic agent, and an antibacterial agent can be added for the purpose of improving the printing process and the durability of the product.

Next, a method of manufacturing a decorative molded article using the above-described decorative film will be described (FIG. 21).
reference).

First, the decorative film 1 is set on the surface of a movable mold 8 which is a mold for injection molding by a clamp member.

As a specific example of the setting method to the movable mold 8, the long decorative film 1 is once wound around a roll shaft to form a roll, and the roll is wound into the movable mold 8 for injection molding. Is placed integrally with the movable mold 8 so as to be movable integrally with the movable mold 8, and while the decorative film 1 is unwound from the roll-shaped scroll, the decorative film 1 is passed between the retracted movable mold 8 and the fixed mold 9 to be used for injection molding. The decorative film 1 may be wound by a roll shaft of a film winding means which is installed so as to be movable integrally with the movable mold 8 below the movable mold 8. As another example, a single-wafer decorative film 1 may be used and set on the surface of the movable mold 8 by a robot or manually. When the decorative film 1 is set on the surface of the movable die 8, the decorative film 1 is placed on the surface of the movable die 8, and then the position of the decorative film 1 with respect to the surface of the movable die 8 is determined by a positioning sensor or the like. The decorative film 1 may be pressed against the surface of the movable mold 8 for injection molding by a clamp member.

Next, after the decorative film 1 is set on the surface of the movable mold 8 for injection molding, the decorative film 1 is removed using the vacuum suction holes formed in the movable mold 8 for injection molding. By performing vacuum suction along the cavity forming surface 10 of the movable mold 8, a three-dimensional shape is formed along the concave portion of the movable mold 8 for injection molding, that is, the cavity forming surface 10 of the cavity 13. As a specific example, the movable die 8
The decorative film 1 set on the surface of the movable die 8 is heated above its softening point to be softened by a heating plate or the like inserted between the movable die 8 and the fixed die 9. The space between the decorative film 1 and the decorative film 1 is sealed, and the air is evacuated from the vacuum suction hole and vacuum suction is performed, and the decorative film 1 is brought into close contact with the inner surface of the concave portion (cavity forming surface 10) of the movable mold 8 for injection molding. There is a way. When processing into a three-dimensional shape, or when fixing and fixing the decorative film 1 with a clamp member, an unnecessary portion of the decorative film 1 may be punched.

Instead of the above method, before setting the decorative film 1 on the surface of the movable mold 8 for injection molding, the movable mold 8 for injection molding and the fixed mold 9 are different from the three-dimensional processing mold. After the decorative film 1 is three-dimensionally processed into a desired shape in advance by using and the punching process is performed into the desired shape, the three-dimensionally processed decorative film 1 is placed in the concave portion of the movable mold 8 for injection molding. You may make it fit. Here, the three-dimensional processing refers to changing the shape of the decorative film 1 from a planar state to a three-dimensional shape. As a desired shape, the cavity forming surface 10 of the movable mold 8 or the fixed mold 9 for injection molding is used.
There is a shape that matches. As a method of processing into a three-dimensional shape, there are a vacuum molding method, a pressure molding method, a press molding method of pressing heated rubber, a press molding method, and the like.
Here, the vacuum forming method means that the decorative film 1 is heated to a temperature higher than its softening point to be softened, the space between the concave portion of the vacuum forming die and the decorative film 1 is sealed, and vacuum suction is performed. In this method, the decorative film 1 is brought into close contact with the inner surface of the concave portion of the vacuum forming die, and the decorative film 1 is formed into a three-dimensional shape that matches the cavity forming surface 10 of the movable mold 8 for injection molding. As a method of punching into a desired shape, there are a Thomson punching method, a pressing method using a die, and the like. Examples of the punched shape include a line along the outer periphery of a predetermined shape and a hole of a predetermined shape. It should be noted that punching may be performed at the same time as processing into a three-dimensional shape.

Next, the movable mold 8 is closed with respect to the fixed mold 9, and the molded resin 12 in the molten state is moved to the gate 11
Then, the molding resin 12 is solidified to form a resin molded product in the cavity 13 and, at the same time, the adhesive layer 4 side of the decorative film 1 is integrally bonded to the surface thereof.

After removing the resin molded product from the movable mold 8, unnecessary portions of the decorative film 1 adhered to the resin molded product are removed. In the case where the desired shape has been punched in advance as described above, the work of removing unnecessary portions of the decorative film 1 is unnecessary.

The movable mold 8 and the fixed mold 9 as the molds for injection molding are not particularly limited to the embodiment described above, and the fixed mold 9 and the movable mold 9 having the gate 11 for injecting the molding resin 12 are used. The fixed mold 9 and the movable mold 8 are closed to form one or a plurality of cavities 13 surrounded by the cavity forming surfaces 10 of the fixed mold 9 and the movable mold 8. do it. Decorative film 1 set in cavity 13 formed by movable mold 8 and fixed mold 9 for injection molding
Covers the cavity forming surface 10. The cavity 13 may form a hole in the resin molded product. The recess forming the cavity 13 may be formed in either the fixed die 9 or the movable die 8. Movable type 8
Alternatively, the fixed die 9 may have a clamp member that presses and fixes the decorative film 1 around the concave portion. The clamp member may be installed on the fixed die 9 or the movable die 8.

The molding resin 12 is not particularly limited. For example, acrylic resin, polystyrene resin,
A polyacrylonitrile styrene resin, a polyacrylonitrile butadiene styrene resin, or the like can be used. In addition, typical molding resins 12 used for interior parts and exterior parts of automobiles include talc-containing polypropylene resins, modified polypropylene resins, and the like.

Next, the mold is opened, and the resin molded product to which the decorative film 1 has been integrated and adhered is taken out. When the decorative film 1 is a transfer material, the base sheet 2 is peeled off. Thus, a decorative molded product can be obtained.

In the case of a horizontal injection molding machine, this is as described above.
The relationship between the movable mold 8 and the movable mold 8 is opposite to that of the horizontal injection molding machine.
In addition, the injection molding machine has not only two molds but also three molds.
The same can be applied to the case of a sheet type.

[0068]

The decorative film of the present invention and the method for producing a decorative molded article using the same have the following excellent effects because they have the above-mentioned constitution.

That is, since the design layer of the decorative film of the present invention has a design pattern in which a large number of design components occupying 50% or more of the total of the regions in which the gradation is applied in one direction or more are provided, the perspective feeling is improved. A pattern rich in changes in direction and direction can be applied to the surface of the molded product, and a decorative molded product excellent in design can be obtained.

[Brief description of the drawings]

FIG. 1 is a graph illustrating the gradation of a symbol component according to the present invention in terms of brightness change.

FIG. 2 is a graph illustrating the gradation of a symbol component according to the present invention in terms of a change in saturation.

FIG. 3 is a graph illustrating gradation of a symbol component according to the present invention in terms of hue change.

FIG. 4 is a graph illustrating a continuous change corresponding to a gradation of a symbol component according to the present invention.

FIG. 5 is a graph illustrating a continuous change that does not correspond to a gradation of a symbol component according to the present invention.

FIG. 6 is a graph illustrating a change rate corresponding to a gradation of a symbol component according to the present invention.

FIG. 7 is a diagram showing an example of a gradation direction and a degree of change in a gradation-applied area of a symbol component according to the present invention.

FIG. 8 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 9 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 10 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 11 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 12 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 13 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 14 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 15 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 16 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 17 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 18 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 19 is a diagram illustrating an example of a symbol pattern according to the present invention.

FIG. 20 is a cross-sectional view showing one embodiment of a decorative film according to the present invention.

FIG. 21 is an embodiment showing one embodiment of a process for producing a decorative molded product according to the present invention.

FIG. 22 is a diagram showing an example of a gradation-applied region of a symbol component according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative film 2 Base sheet 3 Symbol layer 4 Adhesive layer 5 Symbol components 6 consecutive 7 consecutive 8 Movable type 9 Fixed type 10 Cavity forming surface 11 Gate part 12 Molding resin 13 Cavity

Claims (18)

[Claims] 1. A decorative film in which at least a pattern layer is formed on a base sheet, has a design pattern in which a large number of design components occupying 50% or more of a total of regions where gradation is applied in one direction or more are arranged. , The gradation is JIS Z 8729-1980 (C
According to the L ^* a ^* b ^* color system <1976> according to IE, the chromaticity was measured at least at three or more measurement points while sequentially moving at equal intervals of 0.2 to 1.0 mm in the direction in which gradation was applied. Stimulus value L of chromaticity obtained at each measurement point
^At least one of ^* , a ^* , and b ^* is continuously increasing or decreasing between the measurement points, and the color difference ΔE that changes during any 2.0 mm measurement movement is ΔE. A decorative film characterized by satisfying ≧ 0.2. 2. A design element, wherein all of the pattern components are the same with respect to a change in the gradation applied to the design component, its direction, and the area of the gradation portion.
The decorative film according to the above. 3. The decorative film according to claim 1, wherein at least one of the change in the gradation applied to the design component, the direction of the change, and the area of the gradation portion has two or more design components. 4. The decorative film according to claim 3, wherein the design components are arranged in a line, and the design components having the same gradation change, its direction, and the area of the gradation portion are regularly repeated. . 5. The decorative film according to claim 1, wherein all the design components are the same in size of the design components. 6. The size of the symbol component is 2
The decorative film according to any one of claims 1 to 4, wherein there are at least three or more design components. 7. The decorative film according to claim 6, wherein the design components are arranged in a line, and the design components having the same size are regularly repeated. 8. The decorative film according to claim 1, wherein the design elements are arranged in a line. 9. The decorative film according to claim 1, wherein the design components are arranged out of alignment. 10. The decorative film according to claim 1, wherein there are gaps between the design components. 11. The decorative film according to claim 1, wherein there is no gap between the design components. 12. At least one of at least one of a change in a gradation applied to the design component, a direction of the change, a direction of the gradation portion, and a size of the design component. The decorative film according to any one of claims 1 to 11, wherein a set in which the pattern components are present is set as a series, and the same series of combinations of the pattern components is repeated. 13. The decorative film according to claim 12, wherein all the runs are the same. 14. The decorative film according to claim 12, wherein there are at least two types of reams. 15. The decorative film according to claim 14, wherein the reams are arranged in a line, and the same ream of the combination of the design components is regularly repeated. 16. The decoration according to any one of claims 1 to 15, having a pattern component in which other designs such as wood grain, stone grain, logo, hairline, and spin pattern are combined in combination with the gradation. the film. 17. The decorative film according to claim 1, which is inserted into a mold for injection molding, and after the mold is clamped, a molten molded resin is injected to form the decorative film at the same time as molding. A method of manufacturing a decorative molded product, comprising: forming a molded product from a mold after cooling and solidifying the molded product. 18. The method for manufacturing a decorative molded product according to claim 17, wherein the base sheet is peeled off after or when the molded product is taken out of the mold.