JP3514565B2 - Insert film and method for manufacturing insert molded product using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a surface material for furniture,
The present invention relates to an insert film for decorating materials used as building interior and exterior materials, automobile interior and exterior parts, and the like, and a method for manufacturing an insert molded product using the insert film.

[0002]

2. Description of the Related Art Conventionally, as a material used as a surface material for furniture, an interior / exterior material for construction, an interior / exterior component for automobiles, there is an insert molded product obtained by an insert molding method. The insert molding method is an insert film in which a pattern layer made of a pattern ink is formed on an acrylic film is placed in a mold for injection molding, the insert film is heated, and after the mold is clamped, molten resin is placed in the mold. This is a method of adhering the design layer side of the insert film to the resin molded product by injecting and solidifying the resin.

The reason why the acrylic film is used as the base sheet is that it is superior in light resistance and weather resistance to PET film and the like, is excellent in processability, and has a wide selection range of ink and adhesive. It is very wide.

[0004]

By the way, the acrylic film becomes the surface material of the insert-molded article after the insert-molding. On the other hand, the acrylic film has the advantage that it is excellent as a base sheet, but on the other hand, it has the drawback that it is inferior in chemical resistance and stain resistance as a surface material for insert molded products. For example, when a hair styling agent or alcohol adheres to the acrylic film surface of the insert-molded product, it becomes citrus-like. Moreover, if the ink of the oily felt pen adheres, it cannot be wiped off. Furthermore, if a vinyl chloride product such as a license case is placed on the acrylic film side of the insert-molded product, the plasticizer will heat-transfer from the vinyl chloride product when heated in hot weather, which will cause the two to adhere and separate. There is a problem that the surface of the acrylic film becomes citrus-like even if it is peeled off.

Acrylic films also have the drawback of being inferior in abrasion resistance as surface materials for insert-molded products.
That is, the surface of the acrylic film has a large friction coefficient, and a contact object is easily caught on the surface of the acrylic film.

The present invention solves the above-mentioned drawbacks and provides an insert film used for producing an insert-molded article having chemical resistance, stain resistance and abrasion resistance, and a method for producing the insert-molded article. It is an object.

[0007]

In order to achieve the above-mentioned objects, the insert film of the present invention has a pattern layer formed on both sides or one side of an acrylic film, and a fluorine film is further laminated on one side. The thickness of acrylic film is 20μm in the painting insert film.
The thickness of the fluorine film is 1 μm or more, and the thickness of the acrylic film is the thickness of the fluorine film.
The composition is three times or more. In addition, in a painting insert film in which a pattern layer is formed on the acrylic film side surface of a laminated film in which a fluorine film and an acrylic film are laminated, the acrylic film has a thickness of 20 μm.
The thickness of the fluorine film is 1 μm or more, and the thickness of the acrylic film is the thickness of the fluorine film.
The configuration may be three times or more. The acrylic film may have a thickness of 30 μm or more. Alternatively, the fluorine film may have a thickness of 10 μm or less. Further, the thickness of the acrylic film may be 9 times or more the thickness of the fluorine film.
Further, the fluorine film may be a film of any one of a polyvinyl fluoride film, a polyvinylidene fluoride film and a trifluoroethylene film.

According to the method of manufacturing an insert-molded article of the present invention, any one of the above-mentioned insert films is placed in an injection-molding die, and after the die is closed, a molten resin is injected into the die to solidify the resin. As a result, the insert film is bonded to the resin molded product so that the surface on the fluorine film side becomes the surface of the insert molded product.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. Figure 1
FIG. 3 is a schematic cross-sectional view showing an example of the insert film of the present invention. 2, 3 and 4 are schematic cross-sectional views showing other embodiments of the insert film of the present invention. 5 and 6 are schematic cross-sectional views showing one step of the method for manufacturing an insert-molded product of the present invention. FIG. 7 is a schematic cross-sectional view showing an example of an insert-molded product manufactured by the method for manufacturing an insert-molded product of the invention, using the insert film of the invention. In the figure, 1 is an acrylic film, 2 is a fluorine film, 3 is a design layer, 4
Is a laminated film, 5 is an insert film, 6 is a resin molded product, 10 is a movable mold, 11 is a fixed mold, 12 is an injection port, 1
Reference numeral 3 denotes a molten resin, respectively.

The insert film 5 of the present invention is obtained by forming the design layer 3 on the surface of the laminated film 4 on which the fluorine film 2 and the acrylic film 1 are laminated, on the side of the acrylic film 1 (see FIG. 1). Alternatively, the pattern layer 3 may be formed on both sides or one side of the acrylic film 1, and then the fluorine film 2 may be further laminated on one side (see FIGS. 2, 3, and 4).

The acrylic film 1 is for maintaining the pattern layer 3. Examples of the acrylic film 1 include a polymethylmethacrylate film and a polyethylmethacrylate film. Since the acrylic film has very good workability, the insert film using the acrylic film as the base sheet has a complicated inner surface shape of the injection molding die or a shape with a deep rising recess. Even if there is, it is transformed into the inner surface shape of the injection molding die by heating or vacuum suction. Also, since acrylic film does not choose ink,
The selection range of ink and adhesive is very wide. Furthermore, acrylic films are superior in light resistance and weather resistance to PET films and the like. Therefore, for example, when a pattern layer such as a colored layer is formed on the back surface, the fading and damage of these layers should be suppressed. You can

The thickness of the acrylic film 1 is 20 μm or more, and the thickness of the acrylic film 1 is 3 times or more the thickness of the fluorine film 2. When the thickness of the acrylic film 1 is less than 20 μm, when the inner surface of the injection molding die has a complicated shape or has a recess with a deep rise, the insert film is injection-molded during insert molding. It may wrinkle or break without being deformed according to the inner shape of the mold. Also,
The fluorine film 2 has high heat resistance and hardly expands even when heated. For this reason, when the thickness of the acrylic film 1 is less than 3 times the thickness of the fluorine film 2, the properties of the fluorine film 2 are too strong, and when the resin film having a rise of 2 mm or more is used for painting, an insert film is used. 5 does not deform like the inner shape of the injection mold,
May be wrinkled or torn.

The thickness of the acrylic film 1 is more preferably 30 μm or more. Acrylic film thickness is 30
When the thickness is less than μm, when used for painting a resin molded product having a rise of 10.0 mm or more, the insert film 5 does not deform like the inner surface shape of the injection molding die, and wrinkles or breaks. Sometimes. The thickness of acrylic film 1 should be 9 times or more the thickness of fluorine film 2.
More preferable. If the thickness of the acrylic film 1 is less than 9 times the thickness of the fluorine film 2, the insert film 5 will change the shape of the inner surface of the injection molding die when it is used for painting a resin molded product having a rise of 5 mm or more. It may wrinkle or tear without being deformed.

After the insert molding, the fluorine film 2 serves as a surface material of the insert molded article and protects the acrylic film 1 and the pattern layer 3 thereunder. Examples of the fluorine film include a polyvinyl fluoride film, a polyvinylidene fluoride film, and a trifluoroethylene film. These films are heat resistant to heating up to about 100-150 ° C. For example, if the difference in elongation between the acrylic film 1 and the fluorine film 2 during heating is too large, the inner surface of the injection molding die may have a complicated shape or may have a deep rising recess. It is difficult for the insert film to be deformed into the shape of the inner surface of the injection mold even by heating or vacuum suction. Therefore, among the fluorine films, it is preferable to use the above-mentioned films, which have a relatively low heat resistance limit and are close to the heat deformation temperature of the acrylic film of about 80 to 100 ° C.

The fluorine film has excellent chemical resistance and stain resistance against strong acid, strong alkali, grease, oil, organic solvent, etc., and exerts an effective function as a surface material for insert molded products. For example, even if a hair styling agent or alcohol adheres, it does not become rusty, and if ink of an oily felt pen adheres, it can be easily wiped off with alcohol or a solvent. Furthermore, even if a vinyl chloride product such as a license case is placed on the fluorine film 2 surface of the insert molded product, even if it is heated in the hot sun, the plasticizer that has transferred heat from the vinyl chloride product will stick the two together. There is no such thing. Fluorine film also exhibits an effective function as a surface material for insert-molded products in terms of excellent wear resistance. That is, since the surface of the fluorine film has a small friction coefficient and the contacted object is not easily caught, the surface is not easily scratched.

The thickness of the fluorine film 2 is 1 μm or more. When the thickness of the fluorine film 2 is less than 1 μm, it becomes difficult to sufficiently exert chemical resistance, stain resistance and abrasion resistance. The thickness of the fluorine film is more preferably 10 μm or less. Fluorine film has high heat resistance and hardly expands even when heated. For this reason, when the thickness of the fluorine film becomes thicker than 10 μm, the properties of the fluorine film become too strong, and when the resin film with a rise of 5.0 mm or more is used for painting, the insert film 5 is the inner surface of the injection molding die. It may be wrinkled or torn without deforming according to its shape.

As the acrylic film 1 and the fluorine film 2, a laminated film 4 laminated in advance may be used (see FIG. 1). As a method of laminating the laminated film, a method of laminating by a coextrusion method at the time of forming the film is generally used. In addition, each film may be manufactured separately, and then laminated by various laminating methods such as direct laminating and dry laminating, or a heat sealing method.

Further, after the pattern layer 3 and the like are formed on the acrylic film 1, various laminating methods such as direct laminating and dry laminating and heat sealing methods are used.
The fluorine film 2 may be stuck and laminated.

The pattern layer 3 is formed on both sides or one side of the base sheet. Acrylic film 1 and Fluorine film 2
When the laminated film 4 in which and are laminated is used as a base sheet, the pattern layer 3 is formed only on the surface on the acrylic film 1 side (see FIG. 1). When the acrylic film 1 is used as the base sheet, the pattern layer 3 is formed on one surface of the acrylic film 1 and the fluorine film 2 is laminated on the opposite surface (see FIG. 2). When the pattern layer 3 is formed on one side and the fluorine film 2 is laminated on the surface on which the pattern layer 3 is formed (see FIG. 3), the pattern layer 3 is further formed on both sides of the acrylic film 1, and the fluorine layer is formed on either side. There is a case where the films 2 are laminated (see FIG. 4).

The pattern layer 3 is usually formed as a printing layer. The pattern layer 3 may be formed by using a colored ink containing a resin as a binder and a pigment of an appropriate color (including a bright pigment containing pearl powder or aluminum powder) or a dye as a colorant. As a method for forming the print layer, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used. 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 pattern layer 3 may be composed of a metal thin film layer or a combination of a printed layer and a metal thin film layer.

If necessary, an adhesive layer or an anchor layer may be provided. The adhesive layer is provided on the acrylic film 1 side or the pattern layer 3 side when the adhesiveness between the acrylic film 1 and the resin molded product 6 or the adhesiveness between the pattern layer 3 and the resin molded product 6 is poor. For the adhesive layer, acrylic resin, urethane resin, polyester resin, polyamide resin, ethylene butyl alcohol resin, ethylene vinyl acetate copolymer, vinyl chloride / vinyl acetate copolymer, or the like may be used. The anchor layer is formed when the adhesion between the base sheet and the design layer 3 or the adhesion between the design layer 3 and the adhesion layer is poor. As the method of forming the adhesive layer and the anchor layer, it is preferable to use the same printing method or coating method as the pattern layer 3.

The method for producing an insert-molded article of the present invention is a method for producing an insert-molded article using the above-mentioned insert film 5. That is, the insert film 5 is placed in a mold for injection molding, the mold is closed, and then the molten resin 13 is injected into the mold to solidify the resin.
The surface opposite to the side surface is adhered to the resin molded product 6 (see FIGS. 5, 6, and 7).

The injection mold used in this manufacturing method is
It is composed of a movable die 10 and a fixed die 11. When arranging the insert films in the injection molding die, the individual insert films may be fed and arranged one by one, or the necessary parts of the long insert film may be intermittently fed and arranged. Good. When a long insert film is used, it is advisable to use a feeder having a positioning mechanism so that the pattern layer of the insert film and the molding die are in register. Also, when the insert film is intermittently fed and arranged, if the position of the insert film is detected by the sensor and then the insert film is fixed by the movable mold and the fixed mold, the insert film is always fixed at the same position. It is possible to do so, and it is convenient because there is no displacement of the design of the design layer. When the insert film 5 is arranged in the molding die, the insert film 5 is arranged on the injection port 12 side so that the surface of the insert film 5 opposite to the surface on the fluorine film 2 side faces. After placing the insert film, the insert film is brought into close contact with the inner surface of the recess of the movable die 10 by vacuum suction, heating, or the like (see FIG. 4). After that, the injection molding die is closed, and the molten resin 13 is injected and filled into the mold through the injection port 12 provided in the fixed die to solidify the resin and form the resin molded product 6, and at the same time insert into the surface. The film 5 is adhered (see FIG. 6). After cooling the resin molded product 6, the molding die is opened and the insert molded product is taken out.

[0024]

【Example】

Example 1 As the substrate sheet, a laminated film in which a polymethylmethacrylate film and a polyvinylidene fluoride film were laminated was used. The laminated film is produced by the coextrusion method.
Each thickness is 45μ of polymethylmethacrylate film
m, polyvinylidene fluoride film 5 μm (acrylic film / fluorine film = 9/1). Using a pattern ink in which pigments of black, brown, and yellow are mixed in a ratio of 2: 3 using polyvinyl chloride resin as a binder, a wood grain pattern layer is printed on the polymethylmethacrylate film surface of the base sheet. Then, an insert film was obtained (see FIG. 1).

This insert film was placed in an injection molding die consisting of a movable die and a fixed die, and the insert film was vacuum sucked while being heated at 95 ° C. to be brought into close contact with the concave portion of the movable die. After closing the mold, the mold temperature is 40 ℃ -60 ℃.
While maintaining the temperature at 220 ℃ ~ 250 ℃, a molten resin consisting of acrylonitrile butadiene polystyrene copolymer resin (brown) is injected into the mold to solidify the resin, and the pattern layer surface of the insert film is applied to the resin molded product. It was adhered (see FIG. 5). The shape of the resin molded product is 5 cm in length and 10 cm in width.
Then, it was made into a tray shape with a rising edge of 5 mm. The obtained insert-molded product had a desired surface shape without wrinkles or tears in the rising portion.

When a hair styling agent (Brass bath manufactured by Shiseido Co., Ltd.) and ethyl alcohol were dropped onto the surface of the insert-molded article of Example 1, the surface condition was not changed at all. In addition, when the ink of the oily felt pen was attached to the surface of the insert molded product and wiped off with a dry cloth containing a small amount of alcohol, the ink was easily wiped off,
The surface condition of the insert molded product was completely the same as before the ink was applied. Furthermore, place a vinyl chloride film on the insert molded product surface, apply a load of 20 g / cm ² ,
When left at 60 ° C for 12 hours, the vinyl chloride film did not adhere to the insert molded product surface.

Further, with respect to Example 1, a wear test was conducted using a Dever tester and CS-10 abrasive. For comparison, the same test was performed on an insert-molded article using a 50 μm thick acrylic film as a surface material. First, with respect to an insert-molded article using an acrylic film as a surface material, the number of times of polishing until the surface was abraded by about 10 g was measured. Next, when the surface of the insert-molded article of Example 1 was polished in the same manner, the amount of scraped surface did not reach 10 g even after polishing 500 times.

Example 2 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated and bonded by a dry lamination method using urethane two-component curing ink as an adhesive to obtain a laminated film. Using this laminated film as a base sheet, black,
Using a design ink in which the pigments of brown and yellow are mixed in a ratio of 2: 3 using polyvinyl chloride resin as a binder, a pattern layer with a wood pattern is printed on the acrylic film side of the base sheet to obtain an insert film. It was

[0029]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 40 μm             Fluorine film: Polyvinylidene fluoride film 5 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 8/1

Example 3 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0031]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 36 μm             Fluorine film: Polyvinylidene fluoride film 12 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 3/1

Comparative Example 1 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0033]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 30 μm             Fluorine film: Polyvinylidene fluoride film 12 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 2.5 / 1

Using the insert films of Examples 1 to 3 and Comparative Example 1, insert molded products were obtained by the following insert molding method. The shape of the resin molded product is 5 cm in length,
The width is 10 cm and the rise is 1.5 mm, 2.0 mm, 5.0 mm, 10.0 m
Attempts were made to insert-mold into 4 types of resin molded products using 4 types of m-shaped trays and various insert films. In the insert molding method, first, the insert film was placed in an injection molding die consisting of a movable mold and a fixed mold, and the insert film was vacuum sucked while being heated at 95 ° C. to be brought into close contact with the concave part of the movable mold. After closing the mold, the mold temperature is 40 ℃
While maintaining at ~ 60 ° C, molten resin consisting of acrylonitrile butadiene polystyrene copolymer resin (brown) heated at 220 ° C ~ 250 ° C is injected into the mold to solidify the resin and insert the insert film into the resin molded product. The pattern layer surfaces were adhered (see FIG. 5).

With respect to the insert-molded article thus obtained, the one in which the insert film was deformed in accordance with the shape of the inner surface of the injection-molding die and had no wrinkles or tears was designated as ◯,
In addition, wrinkles or tears were evaluated as x and evaluated.

[0036]

[Table 1]

From these results, the insert film in which the thickness of the acrylic film is 3 times or more the thickness of the fluorine film does not cause wrinkles or tears when used for painting a resin molded product having a rise of 2.0 mm. I understood. In addition, the thickness of the acrylic film is
Insert film that is 8 times or more has a rise of 5.0
It was found that wrinkles and tears did not occur even when used for painting a resin molded product of mm. Furthermore, it was found that the insert film having an acrylic film thickness of 9 times or more the thickness of the fluorine film does not cause wrinkles or tears even when used for painting a resin molded product having a rise of 10.0 mm.

Example 4 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0039]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 27 μm             Fluorine film: Polyvinylidene fluoride film 3 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 9/1

Example 5 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0041]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 90 μm             Fluorine film: Polyvinylidene fluoride film 10 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 9/1

Example 6 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0043]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 180 μm             Fluorine film: Polyvinylidene fluoride film 20 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 9/1

Example 7 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0045]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 180 μm             Fluorine film: Polyvinylidene fluoride film 10 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 18/1

Comparative Example 2 An acrylic film and a fluorine film having the following compositions and thicknesses were laminated in the same manner as in Example 2, and this laminated film was used as a base sheet to obtain an insert film in the same manner as in Example 2. It was

[0047]   Laminated film composition             Acrylic film: Polymethylmethacrylate film 18 μm             Fluorine film: Polyvinylidene fluoride film 2 μm   Thickness ratio of acrylic film and fluorine film             Acrylic film / Fluorine film = 9/1

Using the insert films of Example 1, Examples 4 to 7 and Comparative Example 2, insert molded products were obtained by the following insert molding method. The shape of the resin molded product is
The height is 5 cm, the width is 10 cm, and the rise is 1.5 mm, 2.0 mm, 5.0.
We made four types of trays of mm and 10.0 mm, and tried to insert-mold into four types of resin molded products using various insert films. The insert molding method is as follows: First, the insert film is placed in an injection molding die consisting of a movable mold and a fixed mold, and the insert film is 95 ° C. for Example 1, Example 4 and Comparative Example 2; 130 for 7
Vacuum suction was performed while heating at 0 ° C., and it was brought into close contact with the concave portion of the movable mold. After closing the mold, while maintaining the mold temperature at 40 ℃ ~ 60 ℃, molten resin consisting of acrylonitrile butadiene polystyrene copolymer resin (brown) heated to 220 ℃ ~ 250 ℃ is injected into the mold, Was solidified, and the design layer surface of the insert film was adhered to the resin molded product (see FIG. 5).

With respect to the insert-molded article thus obtained, the one in which the insert film was deformed in accordance with the shape of the inner surface of the injection-molding die and was free from wrinkles and tears was designated as ◯,
In addition, wrinkles or tears were evaluated as x and evaluated.

[0050]

[Table 2]

From this result, the thickness of the acrylic film was
It has been found that with an insert film of less than 20 μm, wrinkles and tears may occur when used for painting resin molded products with a rise of 1.5 mm even if the thickness of the acrylic film is 9 times or more the thickness of the fluorine film. It was In addition, in the case of an insert film with an acrylic film thickness of less than 30 μm, even if the acrylic film thickness is 9 times or more the thickness of the fluorine film, when it is used for painting a resin molded product with a rise of 10.0 mm, wrinkles It turned out that a tear occurred. In addition, the insert film with a fluorine film thickness of 20 μm has an acrylic film thickness of 18
Even if the thickness of the film is 0 μm and the thickness of the acrylic film is more than 9 times the thickness of the fluorine film, the rise is 5.0 mm.
It was found that wrinkles and tears occurred when used for painting on the resin molded product of.

[0052]

The insert film of the present invention has a structure in which a pattern layer is formed on both sides or one side of an acrylic film, and a fluorine film is laminated on one side, or a laminated film in which a fluorine film and an acrylic film are laminated. On the surface of the acrylic film side, a pattern layer is formed. Further, the manufacturing method of the insert-molded product of the present invention, the insert film having any one of the above-mentioned configurations is arranged in a mold for injection molding,
After the mold is closed, the molten resin is injected into the mold and the resin is solidified to bond the insert film to the resin molded product so that the surface on the fluorine film side becomes the surface of the insert molded product. Therefore, using the insert film of the present invention, the insert molded article obtained by the method for producing an insert molded article of the present invention has a surface covered with a fluorine film, so that chemical resistance,
It has stain resistance and abrasion resistance.

In the insert film of the present invention, the thickness of the acrylic film is 20 μm or more, the thickness of the fluorine film is 1 μm or more, and the thickness of the acrylic film is 3 times or more the thickness of the fluorine film, so that the rising is not increased. When used for painting a 2.0 mm resin molded product,
The insert film is deformed like the inner shape of the injection mold, and does not wrinkle or break. . Therefore, by using the insert film of the present invention and the method of manufacturing an insert molded product of the present invention, an insert molded product having no wrinkles or tears in the rising portion can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of an insert film of the present invention.

FIG. 2 is a schematic cross-sectional view showing another embodiment of the insert film of the present invention.

FIG. 3 is a schematic cross-sectional view showing another embodiment of the insert film of the present invention.

FIG. 4 is a schematic cross-sectional view showing another embodiment of the insert film of the present invention.

FIG. 5 is a schematic cross-sectional view showing a step in the method for producing an insert-molded product of the present invention.

FIG. 6 is a schematic cross-sectional view showing a step in the method for producing an insert-molded product of the present invention.

FIG. 7 is a schematic cross-sectional view showing an example of an insert-molded article manufactured by the method for manufacturing an insert-molded article of the present invention using the insert film of the present invention.

[Explanation of symbols]

1 acrylic film 2 Fluorine film 3 pattern layers 4 laminated film 5 Insert film 6 resin molded products 10 movable 11 fixed type 12 Exit 13 Molten resin

Claims (6)

(57) [Claims] 1. A surface of an acrylic film side of a laminated film in which a fluorine film and an acrylic film are laminated,
In the decorative insert film on which the pattern layer is formed, the acrylic film has a thickness of 20 μm or more, the fluorine film has a thickness of 1 μm or more, and the acrylic film has a thickness of three times or more the thickness of the fluorine film. And a fluorine film are co-extruded, or each film is manufactured separately and then laminated by a laminating method or a heat sealing method, which is an insert film. 2. The insert film according to claim 1, wherein the acrylic film has a thickness of 30 μm or more. 3. The insert film according to claim 1, wherein the thickness of the fluorine film is 10 μm or less. 4. The insert film according to claim 1, wherein the thickness of the acrylic film is 9 times or more the thickness of the fluorine film. 5. The insert film according to claim 1, wherein the fluorine film is any one of a polyvinyl fluoride film, a polyvinylidene fluoride film, and a trifluoroethylene film. 6. The insert film according to any one of claims 1 to 5 is placed in an injection molding die, and after the die is closed, a molten resin is injected into the die to solidify the resin. Thus, the method for producing an insert-molded product, characterized in that the insert film is bonded to the resin-molded product such that the surface on the fluorine film side becomes the surface of the insert-molded product.