JP2003211487A - In-mold double-side decorating mold and method for manufacturing in-mold double-side decorated product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that a fixing force to a mold of a decorated film is weak and unstable, and a float or a release of the decorated film occurs by a flowing force of an injection molded resin. <P>SOLUTION: An in-mold double-side decorating mold is used for the method for in-mold decoration comprising the steps of disposing a first decorated film along a part not covered with an injection port of a first mold, disposing a second decorated film along a second mold, then closing the first mold and the second mold, injecting the molding resin to mold the resin molded product, and simultaneously adhering the decorated films on both front and rear surfaces of the resin molded product. In this case, a sandwiching member for sandwiching an injection port side end of the first decorated film is provided in the first mold. <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 decorative article made of a resin molded product such as a portable communication device, an electronic application toy component, a rice cooker input section, and a plate-like body used as a dish container The present invention relates to a simultaneous molding double-sided decorative mold for manufacturing a decorative product in which decorative sheets are adhered to both front and back surfaces of the resin molded product, and a method for manufacturing the simultaneous simultaneous molding double-sided decorative product.

[0002]

2. Description of the Related Art Conventionally, a first decorative film is provided along a portion that does not cover the first-type injection port and the first-type injection port and the first-type injection film.
Second to the second type of the part that covers the part corresponding to the decorative film
The first and second molds are closed along the decorative film, and the first and second decorative films are placed between the first and second decorative films.
As a simultaneous molding and decorating method of injecting a light-transmitting molding resin from a mold injection port to mold a resin molded product, and simultaneously adhering a decorative film to both front and back surfaces of the resin molded product, there is disclosed in Japanese Patent Laid-Open No. 6- Those described in 99457 are known.

According to this technique, the injection-molded resin injected onto the first decorative film is fixed to the first mold by adsorbing the end portion of the first decorative film along the first mold on the injection port side. This is a technique that prevents the end of the first decorative film on the exit side from floating or curling up so as not to collide with the end on the exit side.

[0004]

However, the above-mentioned conventional technique has the following problems. Since the decorative film on the first mold side is fixed to the first mold by suction, the fixing force is weak and improper. Stable, due to the flow force of the injected molding resin,
It was not possible to completely prevent the decorative film from being lifted up or curling up at the end portion on the injection port side, and the molding resin easily sank between the first mold and the decorative film. The decorative film having a large film thickness is not suitable because the adsorption tends to be weak and the molding resin tends to be caught on the end portion of the decorative film on the injection port side.

[0005]

The present invention has been made as follows in order to solve the above problems. According to the first aspect of the present invention, in the simultaneous molding double-sided decorative mold of the present invention, the first decorative film is provided along the mold bottom of the portion not covering the injection opening of the first mold having the injection opening. Second on the bottom of the second mold
After placing the decorative film, the first mold and the second mold are closed, and the first mold is placed between the first decorative film and the second decorative film.
A simultaneous molding double-sided decorative mold used in a simultaneous molding decoration method of injecting a molding resin from a mold injection port to mold a resin molded product and simultaneously adhering a decorative film to both front and back surfaces of the resin molded product, The first mold has a sandwiching member for preventing the molding resin injected by sandwiching the injection port side end of the first decorative film from colliding with the injection port side end of the first decorative film. To do.

Further, as described in claim 2,
The simultaneous molding double-sided decorative mold of the present invention comprises a first mold and a second mold, and the first mold has an injection port, a fitting recess having a slope for film sandwiching on the mold bottom, and a first decorative film. Has a sandwiching member having a shape that can be fitted into the fitting recess,
The sandwiching member is characterized in that it can be fitted into and removed from the fitting recess by an air cylinder via a rod.

Further, as described in claim 3,
In the simultaneous molding double-sided decorative mold of the present invention, the first decorative film is provided along the mold bottom of the portion of the first mold that does not cover the injection opening, and the second decoration is formed on the second mold bottom. After the film is placed, the first mold and the second mold are closed, and a molding resin is injected from the injection opening of the first mold between the first decorative film and the second decorative film to form a resin molded product. A simultaneous molding double-sided decoration mold used in a simultaneous molding decoration method in which a decorative film is adhered to both front and back surfaces of the resin molded product at the same time
The first mold has a first sandwiching member for preventing the molding resin injected by sandwiching the end portion of the decorative film on the injection port side from colliding with the end portion of the first decorative film on the injection port side. The second mold has a second pinching member for preventing the molding resin injected by sandwiching the end of the decorative film on the injection port side from colliding with the end of the second decorative film on the injection port side. To do.

Further, as described in claim 4,
The simultaneous molding double-sided decorative mold of the present invention comprises a first mold and a second mold, the first mold being an injection port, a first fitting recess having a first film sandwiching slope on the mold bottom, and a first molding mold. It has a first sandwiching member having a shape capable of being fitted into the first fitting recess via the decorative film, and the first sandwiching member is fitted / fitted into the first fitting recess by an air cylinder via a rod. The second mold has a shape that can be detached from the recess and that can be fitted into the second fitting recess via the second fitting recess having the second film sandwiching slope on the mold bottom and the second decorative film. The present invention is characterized in that it has a second sandwiching member to be presented, and the second sandwiching member can be fitted into and removed from the second fitting recess by an air cylinder via a rod.

Further, as described in claim 5,
The method for producing a simultaneously molded double-sided decorative article according to the present invention uses the simultaneous molded double-sided decorated metal mold according to claim 1 to allow the first decorative film to be placed along the bottom of the first mold and the first decorative film. The exit side end of the decorative film is sandwiched by a sandwiching member, and the second decorative film is placed along the mold bottom of the second mold on the other hand, the first mold and the second mold are closed, and then the first mold is added. A molding resin is injected from the injection port of the first mold between the decorative film and the second decorative film to mold a resin molded product, and at the same time, the decorative film is adhered to both front and back surfaces of the resin molded product to simultaneously mold both surfaces. It is characterized by obtaining decorative items.

Further, as described in claim 6,
According to the method for producing a simultaneously molded double-sided decorative article of the present invention, by using the simultaneously molded double-sided decorated metal mold according to claim 2, the first decorative film is placed along the mold bottom of the first mold and the fitting recess is formed. The end portion of the first decorative film on the injection port side is sandwiched between the fitting recess and the sandwiching member by operating the sandwiching member separated from the air cylinder through the rod.
On the other hand, the second decorative film is placed along the bottom of the second mold, and the first
The mold and the second mold are closed, and then a molding resin is injected between the first decorative film and the second decorative film from the injection port of the first mold to form a resin molded product, and at the same time, The present invention is characterized in that a decorative film is adhered to both front and back surfaces of a resin molded product to obtain a double-sided decorated product simultaneously with molding.

Further, as described in claim 7,
The method for producing a simultaneously molded double-sided decorative article of the present invention uses the simultaneously molded double-sided decorated metal mold according to claim 3 to align the first decorative film with the mold bottom of the first mold, and The end of the decorative film on the injection port side is sandwiched by the first sandwiching member,
On the other hand, along with the second decorative film along the mold bottom of the second mold, the injection port side end of the second decorative film is sandwiched by the second sandwiching member, and the first mold and the second mold are closed. Forming a resin molded product by injecting a molding resin from the injection port of the first mold between the first decorative film and the second decorative film, and at the same time bonding the decorative film to both front and back surfaces of the resin molded product. It is characterized in that it obtains a double-sided decorated product simultaneously with molding.

Further, as described in claim 8,
The method for producing a simultaneously molded double-sided decorative article according to the present invention uses the simultaneously molded double-sided decorated metal mold according to claim 4 to align the first decorative film with the mold bottom of the first mold and to perform the first fitting. By operating the first sandwiching member separated from the fitting recess by the air cylinder via the rod, the end portion of the first decorative film on the exit side is sandwiched between the first fitting recess and the first sandwiching member, and the other. The second decorative film is placed along the mold bottom of the second mold, and the second sandwiching member separated from the second fitting recess is operated by the air cylinder via the rod, so that the injection port side of the second decorative film is formed. The end portion is sandwiched between the second fitting concave portion and the second sandwiching member, and the first
The mold and the second mold are closed, and then a molding resin is injected between the first decorative film and the second decorative film from the injection port of the first mold to form a resin molded product, and at the same time, The present invention is characterized in that a decorative film is adhered to both front and back surfaces of a resin molded product to obtain a double-sided decorated product simultaneously with molding.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A simultaneous molding double-sided decorative mold of the present invention will be described.

According to the simultaneous molding double-sided decorative mold of the present invention, the first mold having the injection port has the first mold bottom in the part not covering the injection mold.
Along with the decorative film and the second decorative film along the bottom of the second mold, the first mold and the second mold are closed, and the first decorative film and the second decorative film are combined. In the first
A simultaneous molding double-sided decorative mold used in a simultaneous molding decoration method of injecting a molding resin from a mold injection port to mold a resin molded product and simultaneously adhering a decorative film to both front and back surfaces of the resin molded product, The first mold is a sandwiching member that prevents the molded resin injected by sandwiching the injection port side end of the first decorative film along the first mold from colliding with the injection port side end of the first decorative film. It is characterized by having in.

More specifically, as shown in FIGS. 1 to 3, it is composed of a first mold and a second mold, the first mold is an injection port, and a fitting concave portion having a slope for inserting a film on the bottom of the mold and There is a sandwiching member having a shape that can be fitted into the fitting recess via the first decorative film, and the sandwiching member can be fitted into and removed from the fitting recess by the air cylinder via the rod. Some are characterized by being possible.

The first mold 1 and the second mold 2 are closed by sandwiching the first decorative film 4 and the second decorative film 5 so that the first decorative film 4 and the second decorative film 5 are closed. Film 5
A molding resin is injected from the injection port 3 of the first mold 1 into a space formed between the two to mold a resin molded product, and a decorative film is adhered to both front and back surfaces of the resin molded product to form a simultaneous double-sided decorated product. It is a mold to get. Examples of the mold including the first mold 1 and the second mold 2 include an injection molding mold.

The first mold 1 is a mold having an injection port 3, and a first decorative film 4 is placed along the bottom of the mold where the injection port 3 is not covered. The injection port 3 is the first decorative film 4
It is an opening for injecting the molding resin melted between the second decoration film 5 and the second decoration film 5. The ejection port 3 is formed at a position not covered by the ejection port side end portion 6 of the first decorative film 4. This is to prevent the first decorative film 4 from blocking the injection port when injecting the molding resin. Type 1 1
The surface of the mold bottom along which the first decorative film 4 is placed may be a flat surface or a concave surface. It is appropriately designed according to the required three-dimensional shape of the resin molded product. Concrete first
As the mold 1, there is a mold having a fitting concave portion 14 having a slope for inserting a film on the bottom of the mold (see FIG. 2).

The first mold 1 has a sandwiching member 7 which sandwiches the end 6 on the injection port side of the first decorative film 4 so that the injected molding resin does not collide with the end 6 on the injection port side. (See Figure 8). The specific sandwiching member 7 has a shape that can be fitted into the fitting recess 14 via the first decorative film 4, and the sandwiching member 7 is fitted into the fitting recess 14 by the air cylinder 10 via the rod 11. Some of them can be fitted into or removed from the fitting recess (see Fig. 2).

The sandwiching member 7 has a trapezoidal cross section (see FIGS. 1 to 4 and 7 to 8). The length of the sandwiching member 7 may be 70 mm, for example, when the width of the resin molded product to be obtained is 50 mm. This is to counter the tension in the longitudinal direction of the decorative film. The reason why the shape of the sandwiching member 7 is as described above is that the decorative film can be smoothly sandwiched against the tension of the decorative film and the generation of wrinkles can be suppressed.
The shape of the sandwiching member 7 can be such that the surface of the sandwiching member 7 and the surface of the first mold 1 are flush with each other by sandwiching the decorative film (FIGS. 1, 2, and 4). reference). The width of the slope of the sandwiching member 7 corresponding to the slope 13 for film sandwiching is preferably 3 to 5 mm (see FIG. 2). If it is less than 3 mm, the sandwiching force will be weakened and lifting or flipping up will be likely to occur. If it exceeds 5 mm, the surface area of the decorative film needs to be increased correspondingly, which is not economical and is also difficult when sandwiched. This is because the slippage of the decorative film becomes large. The angle of the slanting surface 13 for sandwiching the film can be 10 to 45 °. 25 ° is particularly preferable. When the angle is less than 10 °, the strength of the sandwiching member 7 becomes weak and the tip is easily broken and damaged. When the angle exceeds 45 °, the decorative film needs to be bent at a large angle, so that the decorative film is sheared. This is because it is easy to apply, and it is difficult to apply it to a decorative film which is particularly rigid and hardly deformed. In order to increase the strength of the sandwiching member 7, the sandwiching member 7 can be made thick (see FIG. 3). In this case, the space 12 itself into which the molding resin is injected is deformed. However, this may be done in a portion of the space 12 into which the molding resin is injected, in which the sandwiching member 7 exists. Is because it is a portion that is cut off after the simultaneous molding double-sided decoration product is obtained (see FIG. 6). In the simultaneously molded double-sided decorative product in FIG. 6, the decoration by the first decoration film 4 (characters and frame-shaped light colored portion) and the decoration by the second decoration film 5 (frame-shaped dark colored portion) are combined, 1 is a simultaneous molding double-sided decorative article in a mode in which the decoration (characters and frame-shaped light colored portion) by the decorative film 4 is observed through the light transmitting portion of the second decorative film 5.

As the sandwiching member, there may be a rear sandwiching member 73 that sandwiches the opposite end of the first decorative film 4 instead of the end 6 on the exit side (see FIG. 7). Not only the exit side end 6 of the decorative film,
Since the decorative film can be firmly fixed to the first mold by sandwiching the opposite end part at the same time or non-simultaneously, it is possible to prevent the decorative film from wrinkling or flapping, or to perform injection molding. It is possible to prevent the resin from sneaking in between the first decorative film 4 and the first mold.

As a driving mechanism for the sandwiching member 7, there are an air cylinder type, a cam type, a type closing force utilizing type and the like. 1 to 5 illustrate an air cylinder system, which is composed of an air cylinder 10 and a rod 11 built in a fixed mold 1, and a sandwiching member 7 is fixed to the tip of the rod 11. The rod 11 is pushed up by the compressed air in the air cylinder 10. It is effective to use the cam system to make the decorative film more scratch resistant. This is because the degree of movement of the sandwiching member 7 can be finely adjusted. In particular, it is suitable for softly sandwiching a decorative film using a base sheet that is rigid and does not easily deform. Further, when the first mold 1 and the second mold 2 are opened, the decorative film is sandwiched by the air cylinder method, and when the mold is closed, the cam structure contributes by the mold closing force of the mold, and the decorative film is sandwiched. Can be made stronger. With a decorative film that uses a base sheet that is particularly rigid and difficult to deform, it prevents floating of the decorative film due to insufficient sandwiching force, and secures a wider passage for molded resin with low fluidity such as polycarbonate resin. Therefore, it is preferable.

The second mold 2 is a mold along which the second decorative film 5 is placed. The surface along which the second decorative film 5 of the second mold 2 runs can be a flat surface or a concave surface.
It is appropriately designed according to the required three-dimensional shape of the resin molded product.

Both the first mold 1 and the second mold 2 may have the sandwiching member 7. That is, in this aspect, the first decorative film 4 is provided along the mold bottom of the part of the first mold 1 that does not cover the injection hole 3 of the first mold 1 and the second decorative film is formed on the mold bottom of the second mold 2. After putting 5 along, type 1 type 1 and type 2
The mold 2 is closed and a molding resin is injected between the first decorative film 4 and the second decorative film 5 from the injection port 3 of the first mold to form a resin molded product, and at the same time, the resin molded product. 1. A simultaneous molding double-sided decoration mold used in the simultaneous molding simultaneous decoration method of adhering a decorative film to both front and back surfaces of the first decorative film 4, the molding resin injected by sandwiching the injection port side end portion 6 of the first decorative film 4. By having a first pinching member 71 in the first mold so as not to collide with the ejection port side end portion 6 of the first decorative film 4, and by pinching the ejection port side end portion 6 of the second decorative film 4. The injected molding resin is the second decorative film 5.
The second mold 2 has a second sandwiching member 72 for preventing the collision with the end portion 6 on the injection port side. First sandwiching member 7
The shapes and drive mechanisms of the first and second sandwiching members 72 can be the same as those of the sandwiching member 7 described above. The first sandwiching member 71 and the second sandwiching member 72 may be formed at positions facing each other directly in front (see FIG. 4) or at positions not facing each other.

A method for producing the simultaneously molded double-sided decorative article of the present invention will be described.

A manufacturing method using a die having the sandwiching member 7 only in the first die 1 will be described. First, the first decorative film is placed along the mold bottom of the first mold, and the injection opening side end portion 6 of the first decorative film is sandwiched by a sandwiching member, while the second decorative film is molded on the mold bottom of the second mold. Pass 5 The first decorative film 4 is formed on the portion of the first mold 1 which does not cover the injection port 3.
Run along. This is to prevent the first decorative film 4 from blocking the injection port 3 when injecting the molding resin. Further, the second decorative film 5 is placed along the second mold 2 so as to cover the portion corresponding to the first decorative film 4 and the portion corresponding to the injection port 3 of the first mold 1. The reason why the portion corresponding to the first decorative film 4 is covered is to form the decorative film on both front and back surfaces of the resin molded product. To cover the portion corresponding to the injection opening 3 of the first mold 1 as well,
The end of the second decorative film 5 on the injection port side is floated or turned upside down by the molding resin, so that the second mold 2 and the second decorative film 5
This is to prevent the molding resin from sneaking in between. More specifically, the first decorating film 4 is placed along the mold bottom of the first mold 1, and the sandwiching member separated from the fitting recess is operated by the air cylinder 10 via the rod 11, whereby the first decorating film is formed. The injection port side end portion 6 of the decorative film 4 is sandwiched between the fitting concave portion and the sandwiching member 7.

In order to set the first decorative film 4 and the second decorative film 5 in the first mold 1 and the second mold 2, a long decorative film is continuously fed by a decorative film feeding device. Alternatively, the decorative films cut into a predetermined shape by a Thomson type or the like may be set one by one. A vacuum suction hole (not shown) is formed in the first film sandwiching slope 13 of the fitting recess 14 of the first mold 1 to form a first film.
The injection port end portion 6 of the decorative film 4 may be sucked and adhered to the first mold 1 in an auxiliary manner. Also, a clamp member (not shown)
Then, the first decorative film 4 may be fixed to the first mold 1. Moreover, you may heat the 1st decorative film 4 with a heating means (not shown).

The position of the second decorative film 5 along the second mold 2 is as described above.

First decorative film 4 and second decorative film 5
The relative arrangement of the decorative portions with and is preferably such that the characters and patterns of the second decorative film 5 are arranged in the translucent portion of the first decorative film 4. By doing so, when viewed from the first decorative film 4 side, the design of the first decorative film 4 (for example, a black frame) and the design of the second decorative film 5 (for example, a white frame and characters) are combined. Since it can be observed, it seems as if the pattern of the first decorative film 4 (for example, a black frame) and the pattern of the second decorative film 5 (for example, a white frame and characters) are formed on the same plane. Because.

Next, the first mold and the second mold are closed, and then a molding resin is injected from the injection opening of the first mold between the first decorative film and the second decorative film to form a resin. Simultaneously with molding of the molded product, a decorative film is adhered to both front and back surfaces of the resin molded product to obtain a simultaneously molded double-sided decorated product. When the molding resin is injected from the injection opening 3, the injection opening side end portion 6 of the first decorative film 4 is sandwiched by the sandwiching member in the mold bottom of the first mold 1, so that the injection port of the first decorative film 4 is formed. The side edges do not float up and the molding resin does not sink. When the first decorative film 4 is of a type in which the base sheet is peeled off and used, the base sheet is peeled off when the first mold 1 and the second mold 2 are opened, or after the mold is opened. Examples of the molding resin include acrylic resin, ABS resin, polycarbonate resin, polypropylene resin and polylactic acid resin.
The molding resin may have translucency. The reason is that the design of the second decorative film 5 can be seen through from the first decorative film 4 side, and the design of the first decorative film 4 can be seen through from the second decorative film 5 side. is there.

Specific examples of the basic layer structure of the first decorative film 4 and the second decorative film 5 used in the present invention include a base sheet, a release layer, a release layer, a pattern layer,
Some adhesive layers are sequentially laminated. When the base sheet is used without being peeled off, the release layer and the peeling layer are unnecessary. Examples of the material of the base sheet include resin sheets such as acrylic resin, polycarbonate resin, polyolefin resin, polyester resin and ABS resin. Alternatively, there is a composite obtained by laminating each of the above sheets. The thickness of the base sheet is 10 μm to 200 μm.
m can be used. More specifically,
There are a biaxially stretched polyester film having a film thickness of 38 μm or 70 μm, or 188 μm, and a biaxially stretched polylactic acid film having a film thickness of 100 μm. Examples of the material of the release layer include melamine resin-based release agents and silicone resin-based release agents. Examples of the material of the release layer include acrylic resin, polyester resin, polyvinyl chloride resin and the like. As the release layer, there is a release layer provided with a hard coat function using a urethane acrylate resin. The pattern layer is usually formed as a printing layer. As the material of the printing layer, it is preferable to use a colored ink containing a resin such as an acrylic resin, a polyvinyl resin, a polyamide resin, or a polyester resin as a binder and containing a pigment or dye of an appropriate color as a colorant. The dry film thickness of the print layer is generally 1 μm to 50 μm. The pattern layer may be formed of a metal thin film layer or a combination of a printed layer and a metal thin film layer. The metal thin film layer is formed by a vacuum vapor deposition method, a sputtering method, an ion plating method, or the like. The material of the adhesive layer includes acrylic resin and vinyl resin. A heat-sensitive or pressure-sensitive resin suitable for the molding resin is appropriately used. For example, when the material of the molding resin is polyacrylic resin, polyacrylic resin may be used. Further, when the molding resin material is polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, polystyrene blend resin, polyacrylic resin, polystyrene resin, polyamide having affinity with these resins. A system resin or the like may be used. The dry film thickness of the adhesive layer is generally 1 μm to 10 μm. The adhesive layer has translucency. This is because the design of the second decorative film 5 can be seen through from the first decorative film 4 side, and the design of the first decorative film 4 can be seen through from the second decorative film 5 side.

A manufacturing method in which both the first mold 1 and the second mold 2 have a sandwiching member will be described. That is, by using the simultaneous molding double-sided decorative mold having the sandwiching members in both the first mold 1 and the second mold 2, the first decorative film 4 is placed along the mold bottom of the first mold 1 and (1) The end portion 6 on the exit side of the decorative film 4 is sandwiched by the first sandwiching member 71, and on the other hand, the second decorative film 5 is placed along the mold bottom of the second mold 2 and the outlet of the second decorative film 5 is formed. The side end portion 6 is sandwiched by the second sandwiching member 72, the first die 1 and the second die 2 are closed, and the first die 1 and the second die 5 are provided with the first die 1 and the second die 2 of the first die 1. A molding resin is injected from the injection port 3 to mold a resin molded product, and at the same time, a decorative film is adhered to both front and back surfaces of the resin molded product to obtain a simultaneous molding double-sided decorated product.

More specifically, as shown in FIG. 4, it comprises a first mold 1 and a second mold 2, the first mold 1 having an injection port 3 and a first film sandwiching slope 13 at the mold bottom. There is a first sandwiching member 71 having a shape that can be fitted into the first fitting recess 14 via the first fitting recess 14 and the first decorative film 4, and the first sandwiching member 71 is provided with the rod 11 in between. The air cylinder 10 allows fitting into and disengagement from the first fitting recess 14, and the second mold 2 has a second fitting recess 16 having a second film sandwiching slope 15 on the mold bottom. It has the 2nd clamping member 72 which exhibits the shape which can be fitted in the 2nd fitting recessed part 16 via the 2nd decorative film 5, and the 2nd clamping member 72 is the 2nd fitting by the air cylinder 10 via the rod 11. Can be fitted into and removed from the mating recess 16 It is a manufacturing method using a simultaneous molding double-sided decorative mold, in which a first sandwiching member 71 separated from a first fitting recess 14 is provided along a first decorative film 4 along a mold bottom of a first mold 1. Air cylinder 1 through 11
When operated at 0, the end portion 6 on the injection opening side of the first decorative film 4 is sandwiched between the first fitting recess and the first sandwiching member, while the second decorative film is attached to the mold bottom of the second mold. And the second sandwiching member separated from the second fitting recess is operated by the air cylinder 10 via the rod 11, so that the end portion 6 on the injection port side of the second decorative film becomes the second fitting recess. The first mold 1 and the second mold 2 are closed by sandwiching the first mold 1 and the second mold 2 between the two sandwiching members, and then the first mold 1 is shot between the first decorative film 4 and the second decorative film 5. A molding resin is injected from the outlet 3 to mold a resin molded product, and at the same time, a decorative film is adhered to both front and back surfaces of the resin molded product to obtain a simultaneous molding double-sided decorated product.

In this case, the structure of the decorative film used and the operation of the first sandwiching member 71 of the first die 1 are the same as those described above, and the operation of the second sandwiching member of the second die 2 is as described above. This is similar to the case where the first mold 1 has the sandwiching member 7 only.

[0034]

According to the present invention, the molding resin injected does not collide with the injection opening side end portion of the first decorative film along the mold bottom of the portion not covering the injection opening of the first mold having the injection opening. In order to ensure that the first end
The simultaneous molding double-sided decorative mold has a sandwiching member for sandwiching the mold.

Therefore, the following effects can be obtained.
Since the injection port side end of the decorative film on the first mold side is fixed by the sandwiching member, the fixing force is strong and stable, and the injection port side end of the decorative film is generated by the flow force of the injected molding resin. Can be completely prevented from rising and rising, and the molding resin does not sneak between the first mold and the decorative film. The same effect can be obtained even if the thickness of the decorative film is large.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a simultaneous-molding double-sided decorative mold of the present invention and one step of a method for manufacturing a simultaneous-molding double-sided decorative article.

FIG. 2 is a cross-sectional view showing an example of the simultaneous-molding double-sided decorative mold of the present invention and one step of a method for manufacturing the simultaneous molding double-sided decorative article.

FIG. 3 is a cross-sectional view showing an example of a simultaneous molding double-sided decorative mold of the present invention and one step of a method for manufacturing a simultaneous molding double-sided decorated product.

FIG. 4 is a cross-sectional view showing an example of the simultaneous molding double-sided decorative mold of the present invention and one step of a method for manufacturing the simultaneous molding double-sided decorated product.

FIG. 5 is a plan view showing an example of a first mold of the simultaneous-molding double-sided decorative mold of the present invention, showing the positional relationship between the decorative film and the sandwiching member.

FIG. 6 is a plan view showing an example of a molded simultaneous double-sided decorative article obtained by the method for manufacturing a simultaneous molded double-sided decorated article of the present invention.

FIG. 7 is a cross-sectional view showing an example of the simultaneous molding double-sided decorative mold of the present invention and one step of a method for manufacturing the simultaneous molding double-sided decorated product.

FIG. 8 is a perspective view showing an example of a film sandwiching member which is one component of the simultaneous molding double-sided decorative mold of the present invention.

[Explanation of symbols]

1 type 1 2 second type 3 exit 4 First decorative film 5 Second decorative film 6 Exit side end 7 sandwiching member 71 First Clamping Member 72 Second pinching member 73 Rear sandwiching member 10 air cylinders 11 rod 12 Space where molding resin is injected 13 First film sandwiching slope 14 First fitting recess 15 Second film sandwiching slope 16 Second fitting recess

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Claims (8)

[Claims] 1. A first decorative film is provided along a mold bottom of a portion of the first mold which does not cover the injection hole and has a second opening.
After the second decorative film is placed along the mold bottom of the mold, the first mold and the second mold are closed, and the first mold is injected between the first decorative film and the second decorative film. A molding simultaneous double-sided decoration mold used in a molding simultaneous decoration method for injecting a molding resin to mold a resin molded product and at the same time adhering a decorative film to both front and back surfaces of the resin molded product, the first decorative film The double-sided simultaneous molding process is characterized in that the first mold has a sandwiching member for preventing the molding resin injected by sandwiching the injection port side end part of the above from colliding with the injection port side end part of the first decorative film. Decorative mold. 2. A first mold and a second mold, wherein the first mold is fitted into the fitting recess via an injection opening, a fitting recess having a slope for inserting a film on the bottom of the mold, and a first decorative film. Simultaneous molding double-sided decoration gold having a sandwiching member having a possible shape, and the sandwiching member can be fitted into and removed from the fitting recess by an air cylinder via a rod. Type. 3. The first decorative film is provided along the second bottom of the mold having a portion not covering the first mold injection opening.
After the second decorative film is placed along the mold bottom of the mold, the first mold and the second mold are closed, and the first mold is injected between the first decorative film and the second decorative film. A molding simultaneous double-sided decoration mold used in a molding simultaneous decoration method for injecting a molding resin to mold a resin molded product and at the same time adhering a decorative film to both front and back surfaces of the resin molded product, the first decorative film And a second decorative film having a first pinching member in the first mold for preventing the molding resin injected by sandwiching the injection port side end of the first decorative film from colliding with the injection port side end of the first decorative film. The simultaneous molding, characterized in that the second mold has a second pinching member that prevents the molding resin injected by sandwiching the injection port side end of the second decorative film from colliding with the injection port side end of the second decorative film. Double-sided decorative mold. 4. A first mold comprising a first mold and a second mold, wherein the first mold includes a first fitting recess having an injection port, a first film-holding slope having a first film sandwiching slope on the mold bottom, and a first decorative film. There is a first sandwiching member having a shape that can be fitted in the fitting recess, and the first sandwiching member is a first one sandwiched by an air cylinder via a rod.
It is possible to fit into and disengage from the fitting recess.
The second mold has a second fitting recess having a second film sandwiching slope on the mold bottom and a second sandwiching member having a shape that can be fitted into the second fitting recess via the second decorative film,
A simultaneous molding double-sided decorative mold, wherein the second sandwiching member can be fitted into and removed from the second fitting recess by an air cylinder via a rod. 5. The simultaneous molding double-sided decorative mold according to claim 1, wherein the first decorative film is placed along the bottom of the first mold and the end portion of the first decorative film on the injection port side is provided. It is sandwiched by a sandwiching member, and on the other hand, the second decorative film is placed along the mold bottom of the second mold, the first mold and the second mold are closed, and then the first decorative film and the second decorative film. A molding resin is injected from the injection port of the first mold during molding to mold a resin molded product, and at the same time, a decorative film is adhered to both front and back surfaces of the resin molded product to obtain a simultaneous molding double-sided decorated product. Manufacturing method for double-sided decorative products simultaneously molded. 6. The simultaneous molding double-sided decorative mold according to claim 2, wherein the first decorative film is provided along the mold bottom of the first mold, and the sandwiching member separated from the fitting recess is inserted through a rod. By operating with an air cylinder, the end of the first decorative film on the injection port side is sandwiched between the fitting recess and the sandwiching member, and on the other hand, the second decorative film is placed along the mold bottom of the second mold. The first mold and the second mold are closed, and then the first mold
Simultaneous molding by injecting a molding resin from the injection port of the first mold between the decorative film and the second decorative film to mold a resin molded product and at the same time bonding the decorative film to both front and back surfaces of the resin molded product. A method for producing a simultaneously molded double-sided decorative article, which comprises obtaining a double-sided decorative article. 7. The simultaneous molding double-sided decorative mold according to claim 3, wherein the first decorative film is placed along the bottom of the first mold, and the end of the first decorative film on the injection port side is provided. It is sandwiched by the first sandwiching member, and on the other hand, the second decorative film is placed along the mold bottom of the second mold and the exit side end of the second decorative film is sandwiched by the second sandwiching member. A mold is closed, and a molding resin is injected between the first decorative film and the second decorative film from the injection port of the first mold to mold a resin molded product, and at the same time, on both front and back surfaces of the resin molded product. A method for producing a simultaneously molded double-sided decorative article, comprising adhering a decorative film to obtain a simultaneously molded double-sided decorated article. 8. A first sandwiching member which is obtained by using the simultaneous-molding double-sided decorative mold according to claim 4 and having a first decorative film along the bottom of the first mold and separated from the first fitting recess. Is operated by an air cylinder via a rod, so that the end of the first decorative film on the injection port side is sandwiched between the first fitting recess and the first sandwiching member, and the second die bottom is formed on the second mold bottom. (2) Along with the decorative film, the second sandwiching member separated from the second fitting recess is operated by the air cylinder via the rod, so that the end of the second decorative film on the injection port side becomes the second fitting recess. The first die and the second die are closed by sandwiching them between the second sandwiching member, and then the first die.
Simultaneous molding by injecting a molding resin from the injection port of the first mold between the decorative film and the second decorative film to mold a resin molded product and at the same time bonding the decorative film to both front and back surfaces of the resin molded product. A method for producing a simultaneously molded double-sided decorative article, which comprises obtaining a double-sided decorative article.