JPH09183140A - Manufacture of two-color in-mold decorating product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently produce a two-color in-mold decorating product wherein a good-looking picture pattern is formed on one of materials having different qualities or both of them. SOLUTION: A cavity mold 4 and a primary molding core mold 5 mold a primary molding resin section 21. The primary molding resin section 21 to which a decorated sheet 1 is adhered by an adhesive layer is separated from the primary molding core mold 5. The cavity mold 4 to which the primary molding resin section 21 having the decorated sheet 1 adhered thereto is kept adhered is moved to a secondary molding core mold 6. The cavity mold 4 and the secondary molding core mold 6 mold a secondary molding resin section. A two-color in-mold decorating product wherein the decorated sheet is adhered to both of the primary molding resin section and the secondary molding resin section or one of them is taken out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a two-color simultaneous painting product used for front panels and cases of AV equipment and home appliances, buttons, instrument panels and buttons of automobiles, and the like.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a product such as an input button of a computer, two types of molten molding resins having different colors and materials are sequentially injected from two nozzles of one injection molding machine. 2 where two different types of molding resin parts are joined
There is a so-called two-color molding method for producing a colored molded product. In addition, a painting sheet having a pattern layer or the like formed on a base sheet is closed and sandwiched, and a molten molding resin is injection-molded, and at the same time, the painting sheet is adhered to a resin molded product to obtain a simultaneously molded painting product. There is a so-called molding simultaneous painting method.

[0003]

As the design expression by the former two-color molding method, there are two colors or two types depending on the color and material of the resin to be injection-molded. It didn't work. In the latter,
Even if the design is satisfied by the pattern of the transfer layer, the material is limited to a single material. For example, it was not possible to obtain a button having a button made of a thermoplastic elastomer resin in an audio panel made of an ABS resin, and having a multicolored and beautiful design applied to any resin. In addition, in the case of insert molding, a primary molded product (for example, a product with simultaneous molding) is obtained in advance, and this is then inserted (placed) in a secondary molding die in a separate process to carry out secondary molding resin. There is also a method of injection molding, but since the secondary molding is carried out with the lapse of time after obtaining the primary molded product, there are the following problems and it is practically not practiced. 1. It is difficult to insert into the secondary molding die due to shrinkage strain of the primary molded product. Or it may not be possible. 2. Since the secondary molded product is molded after the primary molded product has cooled, close contact between the primary molded product and the secondary molded product is not possible. Alternatively, since the adhesion between the primary molded product and the secondary molded product is poor, there is a problem that the insert sheet is peeled off in the durability test. 3. Painting can be performed only on the primary molded product side (positioning with the secondary molded product becomes a problem). 4. The process is separated and the cost increases.

An object of the present invention is to provide a two-color molding simultaneous painting product capable of efficiently producing a two-color molding simultaneous painting product in which a good-looking pattern is formed on one or both of different materials. It is to provide a manufacturing method.

[0005]

In order to achieve the above object, a method for producing a two-color molding simultaneous decorative article of the present invention comprises:
As described in claim 1, a core mold for primary molding having a primary molding resin injection path and a secondary molding resin mold having a secondary molding resin injection path.
First, by using a two-color molding simultaneous painting apparatus equipped with a core mold for subsequent molding and a cavity mold in which a painting sheet having a pattern layer and an adhesive layer laminated on a base sheet is arranged, Place the mounting sheet, then the cavity mold and 1
The secondary molding core die is closed, the primary molding resin is injected into the cavity to mold the primary molding resin portion, and then the cavity mold and the primary molding core die are opened. , The primary molding resin portion to which the decorating sheet is adhered by the adhesive layer is separated from the primary molding core die, and then the cavity mold in which the primary molding resin portion to which the decorating sheet is adhered is in close contact
Move to the next molding core mold, and then move to the cavity mold and 2
The secondary molding core mold is closed, and the secondary molding resin is injected into the secondary molding cavity to mold the secondary molding resin portion,
Next, the cavity mold and the secondary molding core mold are opened, and the simultaneous two-color molding decorative product in which the decorative sheet is adhered to both or one of the primary molding resin part and the secondary molding resin part is taken out. I did it.

Further, as described in claim 2, at the same time as the mold opening of the cavity mold and the secondary molding core mold, or after the mold opening, only the base sheet is peeled off to form the primary molding resin portion. Only the transfer layer was transferred to both or one of the secondary molding resin parts.

Further, as described in claim 3, as the primary molding resin and the secondary molding resin, resins having mutually different colors are used.

Further, as described in claim 4, as the primary molding resin and the secondary molding resin, resins having mutually different hardnesses are used.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. For convenience of explanation, a painting sheet used in the method for producing a two-color molding simultaneous painting product of the present invention and 2
The color forming simultaneous painting device will be described first.

A specific example of the painting sheet 1 will be described. The decorative sheet 1 is basically a base sheet on which at least a picture layer and an adhesive layer are laminated. Painting sheet 1
Types are those in which the base sheet is not peeled after the molding resin is adhered to the painting sheet 1 (hereinafter referred to as "insert sheet") (FIG. 9), those in which the base sheet is peeled (hereinafter referred to as "transfer sheet"). .) (FIG. 10). When used as a transfer sheet, a release layer is formed between the base sheet and the pattern layer. Examples of the material of the base sheet include various resins such as polyethylene terephthalate, acrylic, and thermoplastic elastomer. The release layer may be made of a polyacrylic resin or the like. When the release layer is required to have hardness, an ionizing radiation curable resin such as an ultraviolet curable resin may be used. The ionizing radiation-curable resin may be used alone, or may be used as a mixture with another resin. The picture layer uses a resin binder and a pigment or a dye. The picture layer may use a resin binder and a metal pigment or an inorganic pigment having a masking property. For the adhesive layer, a heat-sensitive or pressure-sensitive resin suitable for the materials of the primary molding resin 20 and the secondary molding resin 23 is appropriately used. For example, when the primary molding resin 20 is an acrylic resin and the secondary molding resin 23 is a urethane resin, vinyl chloride-vinyl acetate copolymer resin may be used as the adhesive layer. The peeling layer, the pattern layer, and the adhesive layer are formed by various printing methods.
In the painting sheet 1, the adhesive layer adheres only to the primary adhesive portion that adheres to the primary molding resin 20 and to the secondary molding resin 23.
It may be composed of a next adhesive portion. The decorating sheet may have an adhesive layer consisting of only a primary adhesive portion that adheres to the primary molding resin 20. The painting sheet 1 may be cut out at a portion corresponding to 23 parts of the secondary molding resin. The painting sheet 1 may be cut into single sheets, or may be rolled up.

A specific example of the two-color molding simultaneous painting apparatus will be described. The two-color molding simultaneous painting device has a primary molding resin injection path 2
And a cavity mold 4 in which the decorating sheet 1 is placed, and a secondary molding core mold 6 having a secondary molding resin injection path 3. Also, if necessary,
The cavity mold 4 may be provided with a painting sheet feeding device 7 for supplying the painting sheet 1 to the cavity mold 4 and a painting sheet winding device 8.

The primary molding core mold 5 and the secondary molding core mold are
It is recommended to attach it to the fixed platen 15 (Figs. 1 to 4). The primary molding resin injection path is connected to the primary molding resin injection nozzle 11 of the injection unit 10. The secondary molding resin injection path is connected to the secondary molding resin injection nozzle 12 of the injection unit 10.

The cavity mold 4 is preferably attached to a movable platen such as a rotary plate 9 capable of rotating or a slide plate capable of sliding (FIGS. 1 to 4). The cavity mold 4 moves back and forth in a circular arc between the front surface of the primary molding core mold 5 and the front surface of the secondary molding core mold 6 by the rotation of the turntable 9. The cavity mold 4 may be attached to a slide board. Turntable 9
The slide board is fixed to the tip of the shaft 14 of the drive unit 13 mounted in the drive unit 16. The drive unit 13 rotationally drives or slides the turntable 9 via a shaft. In addition, the drive unit 13 includes the core die 5 for primary molding.
It is also possible to drive the rotary disk 9 and the slide disk back and forth so that the cavity mold 4 approaches and separates from both the secondary molding core mold 6 and the secondary molding core mold 6. One cavity mold 4 is provided on the front surface of the primary molding core mold 5 and one on the front surface of the secondary molding core mold 6 so that the primary molding and the secondary molding can be performed simultaneously at different places. It is good to arrange (FIGS. 1 to 4).

The following are specific examples of the primary molding core mold 5, the secondary molding core mold 6 and the cavity mold 4 in the two-color molding simultaneous painting apparatus. Cavity mold 4 is 1
There is a type having a secondary molding cavity 17, the primary molding core die 5 having no cavity, and the secondary molding core die 6 having a secondary molding cavity 18. Alternatively, the cavity mold 4 has a primary molding cavity 17, the primary molding core mold 5 also has a primary molding cavity 17, and the secondary molding core mold 6 has a secondary molding cavity 18. There is something. Alternatively, the cavity mold 4 does not have a cavity, the primary molding core mold 5 has a primary molding cavity 17, and the secondary molding core mold 6 has a secondary molding cavity. Alternatively, the cavity mold 4 has a primary molding cavity 17 and a secondary molding cavity 18,
Some primary molding core dies 5 and secondary molding core dies 6 do not have a cavity. Alternatively, the cavity mold 4 is 1
The secondary molding cavity 17 and the secondary molding cavity 18 are provided, and the primary molding core die 5 also has the primary molding cavity 17.
And the secondary molding core die 6 also has a secondary molding cavity 1
Some have 8.

The injection unit 10 includes a horizontal molding machine (a cavity mold of a mold and a core mold are installed so as to face each other,
Even with horizontal molding, the vertical molding machine (cavity mold and core mold of the mold are installed facing each other up and down,
The mold may be closed vertically). A molding machine having two cylinders for plasticizing two kinds of materials, each of which has a nozzle hole for injecting a resin into a mold, may be used. The two cylinders may be parallel or opposite,
Further, they may be arranged in a right angle direction. The cylinder may be arranged either vertically or horizontally. Said 1
The secondary molding core die 5 and the secondary molding core die 6 may be arranged side by side vertically, or side by side, or the injection paths may be arranged side by side. It may be one that branches from one cylinder to two molding resin injection nozzles.
For example, there are those shown in FIGS. 1 to 4 and 10.

The decorating sheet feeding device 7 and the decorating sheet winding device 8 continuously feed the long decorating sheet 1 to the cavity mold 4. The painting sheet feeding device 7 includes a painting sheet 1 wound in a roll, a support rod for supporting the painting sheet 1 on a rotating disk 9, a nip roll for feeding the painting sheet 1, and a precise alignment with a cavity. It consists of sensors and so on. The decorating sheet winding device 8 includes the decorating sheet 1 sent from the decorating sheet feeding device 7 and wound into a roll, and a support rod for supporting the decorating sheet 1 on the rotating disk 9.

Each step of a concrete example of a method for producing a two-color molding simultaneous painting product of the present invention using the above-mentioned painting sheet and a two-color molding simultaneous painting device will be described below. First, the painting sheet 1 is placed in the cavity mold 4. Specifically, the painting sheet feeding device 7 located above the cavity mold 4 feeds a certain length of the painting sheet 1 in front of the cavity mold 4, and the painting sheet located below the cavity mold 4. The decorating sheet 1 is wound by the winding device 8 and a predetermined pattern of the decorating sheet 1 is placed in front of the primary molding cavity 17 of the cavity mold 4 (FIG. 1). If necessary, prior to the mold closing of the cavity mold 4 and the core mold, the decorating sheet 1 may be heated and vacuum-sucked to be brought into close contact with the inner surface of the primary molding cavity 17 of the cavity mold 4 (FIG. 1). ). When the cavity mold 4 has the cavity 18 for secondary molding, the painting sheet 1 is heated,
Vacuum suction may be performed to bring the cavity mold 4 into close contact with the inner surface of the secondary molding cavity 18. When the painting sheet 1 is a single sheet, it is artificially and mechanically (robot) arranged one by one in the cavity. When arranging the decorating sheet 1 in the primary molding cavity 17 or the secondary molding cavity 18, the decorating sheet 1 may be fixed by the clamp member 26 around the cavity (FIG. 9). Painting sheet 1
When the adhesive layer of 1 is composed of a primary adhesive portion that adheres to the primary molding resin 20 and a secondary adhesive portion that adheres only to the secondary molding resin 23, the primary adhesive portion is for primary molding. It is advisable to arrange the painting sheet 1 so that it can be located in the cavity 17 and sandwiched between the cavity and the primary molding core die 5 so that the secondary adhesive portion does not contact the primary molding resin 20.

Next, the cavity mold 4 and the primary molding core mold 5 are closed, and the primary molding resin 20 is injected into the primary molding cavity 17 to mold the primary molding resin portion 21. . Specifically, for the mold closing, the fixed platen 15 may be pushed forward by the drive unit 13 of the drive unit 16 and the shaft 14. By closing the mold, the decorating sheet 1 is sandwiched between the cavity mold 4 and the primary molding core mold 5 (FIG. 2). The primary molding resin 20 is injected into the primary molding cavity 17 to mold the primary molding resin portion 21, and the primary molding resin portion 21 and the adhesive layer of the decorative sheet 1 are bonded (FIG. 3). The primary molding cavity 17 includes a cavity mold 4 and a primary molding core mold 5.
Or both of them. Adhesion means that the primary molding resin 20 in a molten state is cooled and solidified in contact with the adhesive layer of the painting sheet 1 to form the primary molding resin portion 21 and the primary molding resin portion 21 and the adhesive layer. It means that and stick together and become one. The injection of the primary molding resin 20 is performed by flowing the molding resin through the primary molding resin injection nozzle and the primary molding resin injection path by the injection mechanism of the injection unit 10. The primary molding resin 20 and the secondary molding resin 23 may be molding resins having mutually different colors or may be molding resins having mutually different hardnesses. A specific example of the case where the molding resins having different colors are used is a combination in which the primary molding resin 20 is black and the secondary molding resin is transparent, and the primary molding resin 2
There is a combination in which 0 is white and the secondary molding resin 23 is blue. Both the primary molding resin 20 and the secondary molding resin 23 may be transparent. A specific example of the case where the molding resins having different hardnesses from each other is that the primary molding resin 20 is a thermoplastic resin having a high hardness of JIS A hardness of 100 or more and the secondary molding resin 23 is J
There are combinations that are thermoplastic elastomers with an ISA hardness of 30-100. Alternatively, the primary molding resin 20 is JISA
There is a combination in which the secondary molding resin 23 is a thermoplastic elastomer having a hardness of 30 to 100 and the secondary molding resin 23 is a resin having a high hardness of JIS A hardness of 100 or more. Other resins having a high hardness of JIS A hardness of 100 or more include acrylic styrene resin, acrylic styrene butadiene resin, polycarbonate resin, acrylic resin, nylon resin, styrene resin, vinyl chloride resin, polyester resin, polyurethane resin, polypropylene resin, There is a polyethylene resin, a polybutylene terephthalate resin, or an alloy (also called a mixture or a composite product) of these resins. JIS A hardness 30
As a thermoplastic elastomer of -100, styrene-
Butadiene-styrene (SBS) block copolymer,
There are styrene elastomers such as hydrogenated SBS block copolymers, polyester elastomers, polyurethane elastomers, and polyamide elastomers. In addition, as the thermoplastic elastomer having JIS A hardness of 30 to 100, a silicone two-component curing resin may be provided by LIM (liquid injection molding) injection molding.

Next, the cavity mold 4 and the primary molding core mold 5 are opened to separate the primary molding resin portion 21 from the primary molding core mold 5. Specifically, the mold opening may be performed by pulling the turntable 9 rearward by the drive unit 13 of the drive unit 16 and the shaft 14 (FIG. 4).

In order to prevent the primary molding resin portion 21 from being separated from the cavity mold 4 when the mold is opened, the side wall from the opening to the bottom surface of the cavity of the cavity mold 4 is inclined. A so-called undercut shape in which the bottom surface is wider than the opening is preferable (FIG. 9). The primary molding resin portion 21 is caught on the side wall of the cavity of the cavity mold 4 and becomes difficult to come off, and the primary molding resin portion 21 is easily separated from the core mold, so that the cavity mold 4
Is effective because it is difficult to separate from.

Next, the painting sheet 1 and the primary molding resin portion 2
The cavity mold 4 which is still in close contact with 1 is moved to the secondary molding core mold 6. Specifically, the drive unit 16
It is advisable to rotate the rotary plate 9 that is the movable plate of the cavity mold 4 or slide the slide plate by the drive unit 13 and the shaft 14 (FIG. 1). The rotation of the turntable 9 may be stopped at a predetermined position or the slide of the slide plate may be stopped at a predetermined position by mechanical means such as friction or electrically by electromagnetic force.

Next, the cavity mold 4 and the secondary molding core mold 6 are closed, and the secondary molding resin 23 is injected into the secondary molding cavity 18 to mold the secondary molding resin portion 24. . Specifically, for the mold closing, the fixed platen 15 may be pushed forward by the drive unit 13 of the drive unit 16 and the shaft 14 (FIG. 2). The secondary molding resin 23 is injected into the secondary molding cavity 18 to mold the secondary molding resin portion 24, and the secondary molding resin portion 24 and the adhesive layer of the decorating sheet 1 are bonded (FIG. 3). The secondary molding cavity 18 is a cavity mold 4
One of the secondary molding core dies 6 may have it, or both of them may have it. The injection of the secondary molding resin 23 is performed by flowing the molding resin into the secondary molding resin injection nozzle 12 and the secondary molding resin injection path by the injection mechanism of the injection unit 10.

Next, the cavity mold 4 and the secondary molding core mold 6 are opened, and the painting sheet 1 is adhered to both or one of the primary molding resin portion 21 and the secondary molding resin portion 24.
The color forming simultaneous painting product 25 is taken out. Specifically, the mold opening may be performed by pulling the turntable 9 rearward by the drive unit 13 of the drive unit 16 and the shaft 14 (FIG. 4). Examples of the two-color molding simultaneous painting product 25 include those shown in FIGS. 5 and 6. When a transfer sheet is used as the painting sheet 1,
Simultaneously with or after taking out the two-color molding simultaneous painting product 25, the base sheet is peeled off (FIG. 6). As the two-color molding simultaneous painting product 25 obtained by the manufacturing method of the present invention, the painting sheet 1 adhered only to the primary molding resin portion 21 or the painting sheet 1 only to the secondary molding resin portion 24. Bonded, primary molding resin part 2
There is one in which the painting sheet 1 is adhered to both the first and second molding resin portions 24. Further, the transfer layer transferred only to the primary molding resin portion 21, the transfer layer transferred only to the secondary molding resin portion 24, the transfer to both the primary molding resin portion 21 and the secondary molding resin portion 24. There are layers transferred. Further, there are those in which the primary molding resin portion 21 and the secondary molding resin portion 24 are joined, and those which are not joined.

[0024]

EFFECTS OF THE INVENTION According to the method for producing a two-color molding simultaneous painted product of the present invention, a molded product of a different material excellent in design expression can be efficiently obtained.

The method for producing a two-color simultaneous molding product of the present invention has, for example, a button made of a thermoplastic elastomer resin in an audio panel made of ABS resin, and any resin is multicolored and beautiful. A product with a design can be obtained. Further, since the primary molded resin part and the secondary molded resin part are continuously obtained, the following effects are obtained. 1. Since the secondary molding can be performed before the primary molding resin portion undergoes shrinkage distortion, it can be easily inserted into a mold. 2. Since the secondary molded resin part is molded before the primary molded resin part cools, the adhesion between the primary molded resin part and the secondary molded resin part is good. 3. Painting can be performed on both the primary molding resin part and the secondary molding resin part, and the positioning of the pattern is accurate. 4. The cost is low because the processes are not separated.

According to the method for producing a two-color molding simultaneous painting product of the present invention, since the cavity mold is moved, it is not necessary to rotate or slide the core mold. Therefore, since it is not necessary to attach a drive unit for rotating or sliding the core mold to the injection unit, the injection unit and the device on the core mold side are not complicated and the cost is low.
Further, it is not necessary to align the molding resin injection path of the core mold with the molding resin injection nozzle of the injection unit each time the primary molding is performed, the secondary molding is performed, and the secondary molding is performed.
Further, since only the primary molding resin injection nozzle is provided at the primary molding position of the injection unit, and only the secondary molding resin injection nozzle is provided at the secondary molding position of the injection unit. The structure is not complicated, the cost is low, and the productivity is excellent. Therefore, the production cost is low and the production efficiency is excellent.

In the method for producing a two-color molding simultaneous decorative article of the present invention, the primary molding resin portion, to which the decorative sheet is adhered by the adhesive layer, is separated from the primary molding core die. The core mold for use may be provided with only the primary molding resin injection path, and the secondary molding core mold may be provided with only the secondary molding resin injection path. Therefore, the core type structure is not complicated and the cost is low.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one step of a method for manufacturing a two-color molding simultaneous painted product of the present invention.

FIG. 2 is a cross-sectional view showing one step of a method for manufacturing a two-color molding simultaneous painted product of the present invention.

FIG. 3 is a cross-sectional view showing one step of a method for manufacturing a two-color molding simultaneous painted product of the present invention.

FIG. 4 is a cross-sectional view showing one step of a method for manufacturing a two-color simultaneous formation decorative article of the present invention.

FIG. 5 is a cross-sectional view showing an example of a two-color molding simultaneous decorative product obtained by the method for producing a two-color simultaneous molding decorative product of the present invention.

FIG. 6 is a cross-sectional view showing one step of a method for manufacturing a two-color molding simultaneous decorative product of the present invention.

FIG. 7 is a cross-sectional view showing an example of a painting sheet used in the method for producing a two-color molding simultaneous painting product of the present invention.

FIG. 8 is a cross-sectional view showing an example of a painting sheet used in the method for producing a two-color molding simultaneous painting product of the present invention.

FIG. 9 is a cross-sectional view showing a cavity mold used in the method for manufacturing a two-color molding simultaneous painted product of the present invention.

FIG. 10 is a cross-sectional view showing an example of a two-color molding simultaneous painting device used in the method for producing a two-color molding simultaneous painting product of the present invention.

[Explanation of symbols]

 1 Painting Sheet 2 Primary Molding Resin Injection Path 3 Secondary Molding Resin Injection Path 4 Cavity Mold 5 Primary Molding Core Mold 6 Secondary Molding Core Mold 7 Painting Sheet Feeding Device 8 Painting Sheet Winding Device 9 Rotation Board 10 Injection Unit 11 Primary Molding Resin Injection Nozzle 12 Secondary Molding Resin Injection Nozzle 13 Drive Part 14 Shaft 15 Fixed Plate 16 Drive Unit 17 Primary Molding Cavity 18 Secondary Molding Cavity 20 Primary Molding Resin 21 Primary Molding Resin part 23 Secondary molding resin 24 Secondary molding resin part 25 Two-color molding simultaneous painting product 26 Clamping member

Claims (4)

[Claims] 1. A primary molding core die having a primary molding resin injection path, a secondary molding core die having a secondary molding resin injection path, and a pattern layer and an adhesive layer laminated on a base sheet. Using a two-color molding simultaneous painting device provided with a cavity mold in which a painting sheet is arranged, first, the painting sheet is arranged in the cavity mold, and then the cavity mold and the primary molding core mold are arranged. The mold is closed, and the primary molding resin is injected into the cavity to mold the primary molding resin part.
The mold for primary molding is opened to separate the primary molding resin part to which the painting sheet is adhered by the adhesive layer from the core mold for primary molding, and then the primary molding resin to which the painting sheet is bonded. The cavity mold whose parts are in close contact is moved to the secondary molding core mold, and then the cavity mold and the secondary molding core mold are closed to form the secondary molding resin in the secondary molding cavity. To mold the secondary molding resin part, then open the cavity mold and the secondary molding core mold, and paint on one or both of the primary molding resin part and the secondary molding resin part. A method for producing a two-color molding simultaneous decorative article, characterized in that a two-color simultaneous molding decorative article to which a sheet is adhered is taken out. 2. A primary molding resin part and / or a secondary molding resin part, or either one of them, is peeled off at the same time as the mold opening of the cavity mold and the secondary molding core mold, or after the mold opening. The method for producing a two-color molding simultaneous painted article according to claim 1, wherein only the transfer layer is transferred onto the sheet. 3. The method for producing a two-color molding simultaneous decorative article according to claim 1, wherein resins having mutually different colors are used as the primary molding resin and the secondary molding resin. 4. The method for producing a two-color molding simultaneous painted article according to claim 1, wherein resins having mutually different hardness are used as the primary molding resin and the secondary molding resin.