JP2003231150A - Metallic finish key member having partial matte appearance and manufacture method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metallic finish key member having partial matte appearance which enables obtaining a required matte expression and is excellent in surface wear resistance while able to represent a delicate coloring expression, and a manufacture method for the same. <P>SOLUTION: Using a decorated sheet having at least a decorative layer containing a metallic vapor deposited layer on the back side of a transparent base sheet whose tope side is flat in whole and softening temperature is 80 to 220°C, the decorated sheet is arranged in a die and the die is lamped, then a molten resin is injected and filled, then cooled for solidification, after that the die is opened and the key member made by integrating the decorated sheet with the resin molded product surface is taken out. Then, the key member, which has a matte part and a glossy part by putting a seal on the flat surface of the key member using a carved seal having a minute uneven surface is provided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key member capable of surely obtaining a desired matte expression, excellent in surface abrasion resistance, and capable of delicate colored expression, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, when a key member of a mobile phone or the like is formed into a metallic luster pattern having a partial matt feeling, a mold having a cavity forming surface partially formed with fine irregularities is used. After the resin molded product 5 is obtained by injection molding, the surface of the resin molded product 5 having fine irregularities is thinly plated, and then a colorless or colored overcoat layer 15 is formed by a coating method. (See Figure 12).

[0003]

However, in the above method, it is difficult to delicately control the plating film thickness when plating the surface of the resin molded product 5 having fine irregularities.
The plating will be formed with a certain thickness. Therefore, when the unevenness of fine unevenness is less than 30 μm,
There is a problem that the fine unevenness is filled with the plating layer 14 and a matte feeling cannot be obtained.

Further, the overcoat layer 1 is formed by the coating method.
Since No. 5 has a thin film thickness of 3 to 5 μm, the surface strength is weak, and there is a problem that the plating layer 14 peels off at a portion frequently contacted during long-term use, particularly at a portion formed on a convex portion of fine unevenness.

Further, since the colored expression on the plating layer 14 is carried out by laminating the colored overcoat layer 15 by a coating method such as spray coating, it is difficult to express delicate coloring. Moreover, the thickness of the colored overcoat layer 15 causes unevenness to appear in the spots.

Therefore, according to the present invention, it is possible to surely obtain a desired matte expression, excellent surface abrasion resistance, and a delicate coloring expression, and a metallic matte pattern key member having a partial matt feeling and a method for producing the same. The purpose is to provide.

[0007]

In order to achieve the above object, the method for producing a metallic luster pattern key member having a partial matt feeling of the present invention is such that the entire surface side is smooth and the softening temperature is 80 to 220 ° C. Using a decorative sheet having at least a decorative layer including a metal vapor deposition layer on the back surface of a transparent base sheet, the decorative sheet is placed in a mold, the mold is clamped, the molten resin is injected and filled, and the mixture is cooled and solidified. After that, the mold is opened and the key member in which the decorative sheet is integrated with the surface of the resin molded product is taken out, and then the smooth surface of the key member is stamped with a stamp having a fine uneven surface to form a mat portion and a gloss. And a key member in which the parts are formed.

Further, the method for producing a metallic luster pattern key member having a partial matt feeling of the present invention is such that a metal is formed on the back surface of a transparent substrate sheet having a fine uneven surface on the entire front surface side and having a softening temperature of 80 to 220 ° C. A decorative sheet having at least a decorative layer including a vapor deposition layer is used, the decorative sheet is placed in a mold, the mold is clamped, the molten resin is injected and filled, and the mixture is cooled and solidified. A key member having a matte portion and a gloss portion formed by taking out a key member in which a decorative sheet is integrated on the surface of a resin molded product, and then stamping with a stamp having a smooth surface on the fine irregular surface of the key member. Configured to do so.

Further, according to the method for producing a metallic luster pattern key member having a partial matt feeling of the present invention, the softening temperature is 80 to 220.
Use a decorative sheet having at least a decorative layer including a metal vapor deposition layer on the back surface of a transparent base sheet having a temperature of 0 ° C. As shown in the figure, the mold is clamped, the molten resin is injection-filled, the mixture is cooled and solidified, then the mold is opened and the decorative sheet is integrated with the surface of the resin molded product, and the mold is formed on the surface. The key member on which the matte portion and the glossy portion are formed by transferring the partially fine uneven surface and the smooth surface is taken out.

The metallic luster pattern key member having a partial matt feeling of the present invention is a decorative sheet having at least a decorative layer containing a metal vapor deposition layer on the back surface of a transparent base sheet having a softening temperature of 80 to 220 ° C. Is a key member integrated with the surface of the resin molded product, and the base sheet of the key member has a matte portion having a finely rough surface and a glossy portion having a smooth surface on the surface side.

Further, in each of the above constitutions, the base sheet is constituted by a resin film selected from polycarbonate, acrylic and nylon.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings.

In the first embodiment (see FIG. 1) of the method for manufacturing the metallic luster pattern key member 6 having a partial matt feeling according to the present invention, the entire surface side is smooth and the softening temperature is 80-.
A decorative sheet having at least a decorative layer including a metal vapor deposition layer 4 on the back surface of the transparent base sheet 2 at 220 ° C. is used,
The decorative sheet 1 is placed in a mold 12, the mold is clamped, the molten resin 13 is injected and filled, and after cooling and solidification, the mold is opened and the decorative sheet 1 is integrated on the surface of the resin molded product 5. The key member 6 is taken out, and then the smooth surface 8 of the key member 6 is removed.
It is stamped with a stamp 11 having a fine uneven surface 7 (see FIGS.
The key member 6 is formed with the mat portion 9 and the gloss portion 10 (see below).

The transparent substrate sheet 2 has a metal vapor deposition layer 4
It supports and protects the decorative layer including. The base sheet 2 can give a partial matt feeling by stamping as described above, but its softening temperature needs to be in the range of 80 to 220 ° C. When the softening temperature of the base sheet 2 is less than 80 ° C., it cannot withstand the heat of drying when forming the decorative layer by various printing methods and causes dimensional shrinkage, so that it is difficult to accurately register each decorative layer. become. Further, when the softening temperature of the base sheet 2 exceeds 220 ° C., the base sheet 2 is imprinted by stamping.
Since a high temperature processing is required to impart a partial matt feeling to the above, cracks or fine wrinkles are generated in the printed layer such as the front anchor layer 3 of the metal vapor deposition layer 4 and the metallic luster is impaired. . Examples of the transparent substrate sheet 2 having a softening temperature of 80 to 220 ° C. include polycarbonate, acrylic,
It is preferable to use a resin film selected from nylon.

The thickness of the base sheet 2 is 50 to 50.
The range may be 250 μm. When the thickness is less than 50 μm, the film forming process is difficult and the handling in each process is poor. Further, the decorative sheet 1 is usually preformed in advance to a key shape before injection molding, but there is a high risk of breaking at a portion which cannot follow the elongation at this time and becomes a thin portion. Further, there is a high risk that the resin molded product 5 in the lower layer will not be able to endure the heating at the time of stamping and the key member 6 itself will be deformed.
If the thickness exceeds 250 μm, it takes a long time to heat the film to the optimum preforming state, resulting in poor production efficiency.
Moreover, even if the role of the key member 6 as the surface protective layer is taken into consideration, the thickness of the key member 6 is not required and the cost is increased.

The decorative layer is for decorating the key member 6, and in the present invention, includes the metal vapor deposition layer 4.

The metal vapor deposition layer 4 is for expressing a metallic luster as a decorative layer, and is formed by a vacuum vapor deposition method, a sputtering method, an ion plating method or the like. In this case, depending on the metallic luster color you want to express, aluminum,
Metals such as nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead and zinc, and alloys or compounds thereof are used. The thickness of the metal vapor deposition layer 4 is 0.0
It may be formed in a thickness of 1 μm to 0.04 μm. Film thickness 0.0
When the thickness is less than 1 μm, it is difficult to control the film thickness in the vapor deposition process, and when the thickness exceeds 0.04 μm, there is a fear of corrosion.

The metal vapor deposition layer 4 may be partially provided. As a method for partially forming the metal vapor deposition layer 4, a mask layer is partially formed on the metal vapor deposition layer 4 formed on the entire surface of the base sheet 2 by a screen printing method or the like, and then the metal vapor deposition layer 4 is immersed in an acid or alkali aqueous solution. There are an etching method of removing the metal vapor deposition layer 4 other than the laminated portion, and a laser marking method of forming the metal vapor deposition layer 4 on the entire surface and then removing the metal vapor deposition layer 4 into a desired pattern shape by a laser beam.

When the metal vapor deposition layer 4 is provided, a front anchor layer 3 (see FIGS. 1 to 4) and a rear anchor layer are provided in order to improve the adhesion between other layers and the metal vapor deposition layer 4. Good. The materials of the front anchor layer 3 and the rear anchor layer are two-component curing urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, polyacrylic resin. , An epoxy resin, a vinyl copolymer resin, etc. can be used. It is particularly preferable to use a polyacrylic resin. The polyacrylic resin has excellent transparency and thus reproduces the glossy feel of a metallic design. Also, because it has excellent heat resistance and flexibility, it is more difficult for minute cracks and wrinkles to occur in the anchor layer, and it follows the extension during preforming. It is easy to do so it does not spoil the metallic luster. As a method of forming the front anchor layer 3 and the rear anchor layer, there are 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 coating method and a screen printing method.

The decorative layer may be a combination of the printed layer and the metal vapor deposition layer 4. Further, the decorative layer composed of the printed layer may be one which can illuminate the translucent pattern portion such as characters and symbols by irradiating from the back surface with a light source. As the material of the decorative layer composed of the print layer,
A resin such as urethane resin, polyester resin, acrylic resin, or olefin resin is used as a binder, and a thermosetting ink or a solvent volatilization type ink containing a pigment or dye of an appropriate color as a colorant may be appropriately selected and used.
Since the ink layer that is not easily softened by heating during preforming does not adhere to the preforming die, it can be removed from the preformed decorative sheet 1 without destroying its three-dimensional shape.
Since it follows the rapid and local expansion during preforming, light leakage does not occur even when a light source is arranged on the back surface. Further, when the high temperature molten resin 13 is brought into contact with the molten resin, the decorative layer is less likely to be melted to cause a defective appearance.

As a method of forming the decorative layer composed of the printing layer, it is preferable to use an ordinary printing method such as an offset printing method, a gravure printing method, a screen printing method or the like. In particular, offset printing and gravure printing are suitable for multicolor printing and gradation expression. Further, in the case of a single color, a coating method such as a gravure coating method, a roll coating method or a comma coating method can be adopted. The print layer may be provided entirely or partially depending on the design to be expressed.

The dry film thickness of the decorative layer composed of the printed layer is 1.
The thickness is preferably 0 to 30 μm. If the thickness is less than 1.0 μm, sufficient coloring cannot be obtained, and sufficient light-shielding property cannot be secured at a portion which becomes a thin portion due to extension during preforming. On the other hand, when it exceeds 30 μm, the residual solvent is hard to volatilize, so that the demolding property at the time of preforming is deteriorated and the decorative layer is liable to cause ink flow when the molten resin 13 is injected.

The constitution of the decorative sheet 1 according to the present invention is not limited to the above-mentioned embodiment, and for example, an adhesive layer for improving the adhesion between the decorative sheet 1 and the resin molded product 5 is provided. Can be provided. The adhesive layer may be appropriately selected according to the material of the resin molded product 5.
For example, when the material of the resin molded product 5 is polyacrylic resin, polyacrylic resin may be used. When the material of the resin molded product 5 is a polyphenylene oxide-polystyrene copolymer resin, a polycarbonate resin, a styrene resin, or a polystyrene blend resin, a polyacrylic resin or a polystyrene resin having an affinity for these resins. Resin, polyamide resin, etc. may be used. Furthermore, when the material of the resin molded product 5 is polypropylene resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and coumarone indene resin can be used. As a method for forming the adhesive layer, there are 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 coating method and a screen printing method. The adhesive layer may be formed with a film thickness of 1 to 30 μm. When the film thickness is less than 1 μm, sufficient adhesion with the molding resin cannot be obtained. When the film thickness exceeds 30 μm,
Difficult with the forming method by each printing method. The adhesive layer may be transparent or translucent, and may be colored so that it can be used also as a light-shielding or light-transmitting colored layer.

As the resin molded product 5 in which the decorative sheet 1 as described above is integrated on the surface, it is preferable to appropriately select and use a molding resin used in general insert molding, but the key member 6 is required. Polycarbonate resin is particularly preferable in terms of impact resistance and heat resistance. Also,
The resin molded product 5 is transparent or translucent when the light-transmitting pattern portion such as characters and symbols is illuminated by irradiating from the back surface with a light source. Further, the resin molded product 5 is
It may be colored.

Further, the stamping for forming the partial fine uneven surface 7 on the smooth surface 8 of the key member 6 taken out from the die 12 is applied to the base sheet 2 covering the outermost surface of the key member 6 as a base. It is performed by pushing in the metal stamp 11 whose temperature is adjusted in the temperature range higher by 10 to 30 ° C. than the softening temperature of the material sheet,
The fine irregularities having a depth of 1 to 30 μm provided on the marking 11 are transferred to the surface of the base sheet 2.

As another method for manufacturing the metallic luster pattern key member 6 having a partial matt feeling according to the present invention, a finely concavo-convex surface 7 is provided on the entire surface side and the softening temperature is 80 to 220 ° C.
Using the decorative sheet 1 having at least a decorative layer including the metal vapor deposition layer 4 on the back surface of the transparent substrate sheet 2 which is, the decorative sheet 1 is the surface of the resin molded product 5 by injection molding as in the first embodiment. After the key member 6 integrated with the key member 6 is obtained, the fine concave-convex surface 7 of the key member 6 is stamped with a stamp 11 having a smooth surface 8 (see FIGS. 6 to 8) to form a mat portion 9 and a gloss portion 10. It is also possible to use the key member 6 (see FIG. 5) in which and are formed (second embodiment). In this case, as the base sheet 2 having the fine uneven surface 7 on the entire surface side used for the decorative sheet 1, the roll having the fine uneven surface 7 having a desired depth of 1 to 30 μm and the roll having the smooth surface 8 are formed at the time of film formation. The sheet having the roll surface unevenness transferred to the sheet surface side is used.

As another method of manufacturing the metallic luster pattern key member 6 having a partial matt feeling according to the present invention, the metal vapor deposition layer 4 is included on the back surface of the transparent base sheet 2 having a softening temperature of 80 to 220 ° C. Using the decorative sheet 1 having at least a decorative layer, the decorative sheet 1 is placed in the mold 12 so that the base sheet 2 side of the decorative sheet 1 is in contact with the cavity forming surface in which the fine uneven surface 7 is partially formed [Fig. 9), the mold is clamped, the molten resin 13 is injected and filled (see FIG. 10), and after cooling and solidifying,
The decorative sheet 1 is integrated with the surface of the resin molded product 5 by opening the mold, and at the same time, the fine uneven surface 7 and the smooth surface 8 of the mold 12 are transferred to the mat portion 9 and the gloss portion 10. It is also possible to take out the key member 6 formed with (see FIGS. 11 and 5) (third embodiment).

In the case of the above-mentioned third embodiment, the base sheet 2 used for the decorative sheet 1 may be one having a smooth surface as in the first embodiment, as in the second embodiment. It does not matter whether the entire surface has fine irregularities. Due to the resin heat of the molten resin 13 and the injection pressure, the portion of the cavity forming surface that is in contact with the fine uneven surface 7 is transferred to the surface of the key member 6 to become the mat portion 9, and the portion that is in contact with the smooth surface 8 of the cavity forming surface is the key member 6 It is transferred to the surface and becomes the glossy portion 10.

Depth 1 to 3 on the cavity forming surface of the mold 12.
Examples of methods for forming fine irregularities of 0 μm include a sandblast method, an etching method, an electric discharge machining method, and a laser machining method.

The key member 6 obtained by each of the above manufacturing methods has a decorative sheet 1 having at least a decorative layer containing a metal vapor deposition layer 4 on the back surface of a transparent base sheet 2 having a softening temperature of 80 to 220 ° C. Is integrated with the surface of the resin molded product 5, and the base sheet 2 of the key member 6 has a mat portion 9 having a finely roughened surface 7 and a gloss portion 10 having a smooth surface 8 on the surface side. It is a thing. Accordingly, the mat portion 9 in which the metal vapor deposition layer 4 is composed of the fine uneven surface 7 of the base sheet 2
Since it is provided on the surface opposite to the surface having, the desired metallized expression can be surely obtained without filling the fine irregularities with the metal vapor deposition layer 4.

The base sheet 2 having a transparent metal vapor deposition layer 4
Since it is provided on the surface opposite to the surface of the base sheet 2 having the mat portion 9 made of the finely roughened surface 7, the metal vapor deposition layer 4 can be peeled off at a frequently contacted portion even during long-term use. Don't get up Further, since the metal vapor deposition layer 4 is protected by the transparent base sheet 2, discoloration due to corrosion or the like does not occur.

Further, since the decorative sheet 1 is integrated with the surface of the resin molded product 5, the base sheet 2 is added to the decorative sheet 1.
By printing the pattern to be expressed together with the metal vapor deposition layer 4 on the key member 6, delicate coloring can be expressed on the key member 6.

[0033]

[Example] (Example 1) A thickness 130 in which the entire surface is smooth
μm polycarbonate film (softening point 150 ℃)
A thermosetting anchor layer made of acrylic polyol is formed on one side of the whole surface by the reverse coating method, and then a metal deposition layer made of aluminum and having a thickness of 0.04 μm is formed on the entire surface by the vacuum deposition method. After Sumi ink was partially formed by screen printing using "SG410 / dedicated curing agent = 19: 1" (urethane two-component curing ink) manufactured by Seiko Advance, and was subjected to hot air drying at 80 ° C x 5 minutes. Then, it is immersed in an alkaline solution to remove the metal vapor deposition layer on which the Sumi ink layer is not laminated, then an adhesive layer is formed on the entire surface by a screen printing method using an ink composed of vinyl chloride-vinyl acetate copolymer resin, and finally at 80 ° C. × It was dried for 2 hours to form a decorative sheet.

After preforming this into a three-dimensional shape by a high-pressure molding method, it is placed in a molding die having a cavity shape corresponding to a three-dimensional shape, and the die is clamped to make a molten PC made of Bayer PC.
The resin "Makrolon 2295" was injected from the side opposite to the base sheet of the decorative sheet, and was cooled and solidified to obtain a key member in which the decorative sheet was integrated with the surface of the resin molded product and the entire surface was smooth.

On a desired portion of the surface of the key member, a metal stamp having a fine concavo-convex surface having a depth of 5 μm, the surface temperature of which was adjusted to 170 ° C., was stamped with a load of 9.3 × 10 ⁵ Pa for 3 seconds. As a result, a key member having a mat portion and a gloss portion was obtained.

(Example 2) The base sheet used for producing the decorative sheet has a fine concavo-convex surface having a depth of 5 µm on the entire surface opposite to the surface on which the metal vapor deposition layer is provided, and the metal stamp used for stamping is smooth. Same as Example 1 except having a surface. (Example 3) A thermosetting anchor layer made of acrylic polyol was formed on one surface of a 100 μm thick polyamide film (softening point 215 ° C.) by a gravure coating method, and then a thickness of 0.06 made of aluminum was formed thereon.
A metal vapor-deposited layer of μm is formed on the entire surface by a vacuum vapor deposition method, and then Sumi Ink is partially screen-printed using “SG410 / special curing agent = 19: 1” (urethane 2-liquid curing type ink) manufactured by Seiko Advance. Formed by applying a hot air drying process at 80 ° C for 5 minutes, immersing it in an alkaline solution to remove the metal vapor-deposition layer on which the Sumi ink layer is not laminated, and then removing the ink consisting of vinyl chloride-vinyl acetate copolymer resin. Adhesive layer is formed on the entire surface by screen printing method, and finally 80
℃ × 2 hours dried to form a decorative sheet

After this decorative sheet was preformed into a three-dimensional shape by a high-pressure molding method, a fine uneven surface having a depth of 20 μm was partially formed in a molding die having a cabinet shape corresponding to a three-dimensional shape. The above decorative sheet is placed so that the base sheet side is in contact with the cavity forming surface, mold-clamped, and molten Molten Bayer PC resin "Makrolon 2295" is injected from the side opposite to the base sheet of the decorative sheet to cool and solidify. Was integrated with the surface of the resin molded product, and a partial fine uneven surface and a smooth surface of the mold were transferred to the surface to obtain a key member in which a mat portion and a gloss portion were formed.

[0038]

Since the metallic luster pattern key member having a partial matt feeling and the method for producing the same according to the present invention are constituted as described above, they have the following effects.

That is, the metal luster pattern key member having a partial matt feeling obtained in the present invention has a softening temperature of 80 to 22.
A decorative sheet having at least a decorative layer containing a metal vapor deposition layer on the back surface of a transparent base sheet at 0 ° C. is integrated on the surface of a resin molded product, and the base sheet of the key member is on the front surface side. Since it has a matte part consisting of a fine uneven surface and a glossy part consisting of a smooth surface, it is possible to surely obtain a desired matte expression, excellent surface abrasion resistance, and delicate colored expression is also possible. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a metallic luster pattern key member having a partial matt feeling according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 3 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 4 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 5 is a cross-sectional view showing an example of a metallic luster pattern key member having a partial matt feeling according to the present invention.

FIG. 6 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 7 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 8 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 9 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 10 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 11 is a cross-sectional view showing an example of a partial mat providing step according to the present invention.

FIG. 12 is a cross-sectional view showing an example of a metallic luster pattern key member having a partial matt feeling according to the prior art.

[Explanation of symbols]

1 decorative sheet 2 Base sheet 3 Front anchor layer 4 Metal deposition layer 5 Resin molded products 6 key members 7 Fine uneven surface 8 smooth surface 9 Matt section 10 gloss 11 stamps 12 mold 13 Molten resin 14 plating layer 15 Overcoat layer

Claims (6)

[Claims] 1. A decorative sheet having at least a decorative layer containing a metal deposition layer on the back surface of a transparent base sheet having a smooth front surface and a softening temperature of 80 to 220 ° C. Is placed in the mold, the mold is clamped, the molten resin is injected and filled, and after cooling and solidification, the mold is opened to take out the key member in which the decorative sheet is integrated on the surface of the resin molded product, and then the key A method for producing a metallic luster pattern key member having a partial matt feeling, which is characterized in that a key member in which a mat portion and a gloss portion are formed by stamping with a stamp having a fine uneven surface on the smooth surface of the member. 2. A decorative sheet having at least a decorative layer containing a metal deposition layer on the back surface of a transparent substrate sheet having a fine uneven surface on the entire surface side and having a softening temperature of 80 to 220 ° C. The decorative sheet is placed in a mold, the mold is clamped, the molten resin is injected and filled, and after cooling and solidification, the mold is opened and the key member in which the decorative sheet is integrated on the surface of the resin molded product is taken out, and then, Manufacture of a metallic luster pattern key member having a partial matt feeling, wherein the key member is stamped with a stamp having a smooth surface on the fine concavo-convex surface to form a matte portion and a glossy portion. Method. 3. A cavity formation in which a fine uneven surface is partially formed by using a decorative sheet having at least a decorative layer containing a metal vapor deposition layer on the back surface of a transparent substrate sheet having a softening temperature of 80 to 220 ° C. The decorative sheet is placed in a mold so that the base sheet side of the decorative sheet is in contact with the surface, the mold is clamped and the molten resin is injected and filled, and after cooling and solidification, the mold is opened and the decorative sheet is placed on the surface of the resin molded product. A metallic luster having a partial matt feeling, which is integrated and takes out a key member having a matte portion and a glossy portion formed by transferring a partly fine uneven surface and a smooth surface of the die to the surface thereof. Manufacturing method of handle key member. 4. The base sheet is polycarbonate,
The method for producing a metallic luster pattern key member having a partial matt feeling according to any one of claims 1 to 3, which is a resin film selected from acrylic and nylon. 5. A key member in which a decorative sheet having at least a decorative layer containing a metal vapor deposition layer on the back surface of a transparent base sheet having a softening temperature of 80 to 220 ° C. is integrated on the surface of a resin molded product. A metallic luster pattern key member having a partial matt feeling, wherein the base sheet of the key member has a mat portion having a finely rough surface and a gloss portion having a smooth surface on the front surface side. 6. The base sheet is polycarbonate,
The metallic luster pattern key member having a partial matt feeling according to claim 5, which is a resin film selected from acrylic and nylon.